This webpage has been specially designed for budding collectors & dealers in coins who wish to Acquire basic but authentic information about their hobby/occupation.
1.
Handling of a Coin.
A Coin should always be held by its
RIM / EDGE, with thumb and index finger. It should never be held from OBVERSE& REVERSE side; otherwise it will lose its weight and beauty .If possible the coins should be seen/checked where carpet or mat is spread over the floor, so as to reduce the damage to the coin in case it falls down.
2.
Sides of a Coin.

Every coin has two sides
OBVERSE & REVERSE. Obverse is also called head. It is the main side of a coin carrying the portrait head of the ruler or a Symbol and name of the country. Reverse is the back side of a coin and is called Tail. It depicts the denomination or issue price of the coin with year and mint mark underneath. However in all the commemorative coins issued in India, the denomination is given under the ASHOKA LION CAPITAL.
3.
Edges of Coins.
There are four types of edges of coins.
(a)
Reeded Edge (Milled Edge, with cross serrations on Rim).
(b)
Plain edge (No mark on Rim).
(c)
Security Edge (with a deep Indentation on the Rim as if in Two
parts).
(d)
Oblique Edge (with serration at an Angle of 30°-45° to the Rim).

During the period 1835-2002, coins with first three types of edges have been issued.
4.
Technique Of Minting Coins.
There are four methods of Minting Coins
(i) Punch Marked
(ii) Casting
(iii)Repousse
(iv) Die-Struck (Milled)
Since nineteenth century, the die-struck milled method is being followed in every country.
Machine minted coins have better finish, the labour cost is much reduced and output is manifold. In 1790, the above machines were brought from England, and manufacturing of Milled Coins started at Calcutta.
5.
Mint Mark On Coins (local & Foreign).
Indian coins since 1835-2002 have the following Mint Marks which are found under the date (year of issue) of the coin. Specific Mint Mark is assigned to a specific Mint, which are explained below;-
(a)
BOMBAY MINT (Mumbai) The Bombay Mint has a
small dot or
diamond mint mark
under Date of the Coin.
(b)
CALCUTTA MINT (Kolkata) The Calcutta Mint has
No Mint Mark beneath the date of coin.
(c)
HYDERABAD MINT The Hyderabad Mint has
split diamond or a
dot in
diamond or
five pointed STAR Under the date of coin.
(d)
LAHORE MINT The Lahore Mint has a letter
"L" mint mark under the date of
the coin.Production started on 5th October 1943 A.D.
(e)
NOIDA MINT The Noida Mint has a
small or thick dot under the date of the
Coin. Production Started in 1988.
(f)
PRETORIA MINT The Pretoria Mint has
diamond mark under the date 1943.
(g)
SEOUL MINT The Seoul mint has a “
Five Pointed Star" under the date of the
coin but exactly below the first or Last Digits of dates 1985 and 1997.
(h)
ROYAL MINT LONDON The Birmingham Mint has a small dot under the date of the coin but exactly
below the First Digit of Date 1985.
(i)
HEATON PRESS MINT This Mint has Ornamental/ Decorated Letter
"H" under the last
digit of the date 1985.
(j)
ROYAL CANADIAN MINT, OTTAWA This Ottawa Mint has a
"C" mint mark under the date of the coin.
(k)
MEXICO MINT The Mexico City Mint has an
" M " mint mark under the date of
the coin.
6.
Composition of metals used in minting Indian coins (i) Gold (1835-1918) 91.7% or 22 Carat.
(ii) Standard Silver (1835-1939) 91.7%SiLver+8.3% Copper.
(iii) Silver Alloy (1939-1945) 50%Silver+ 40%Copper+ 5%Nickel+ 5%Zinc.
(iv) Silver Alloy (1969-71) 80%Silver+ 15%Copper+ 5%Nickel.
(v) Silver Alloy (1972-2002) 50%Silver+40% Copper+ 5%Nickel+5%Zinc.
(vi) Copper (1835-1906) Pure Copper.
(vii) Bronze (1906-64) 95-97% Copper+ 4%-21/2%Tin+1.00%;0.50%Zinc.
(viii) Copper-Nickel (1906-2002) 75%Copper+ 25%Nickel.
(ix) Nickel Brass (1964-71) 79%Copper+ 20%Zinc+ 1%Nickel.
(x) Nickel (1946-1974) Pure Nickel.
(xi) Aluminum (1965-93) 96%Aluminium+4% Magnesium.
(xii) Aluminum Bronze (1969-71) 92% Copper+ 2%Nickel+6%Aluminium.
(xiii) Stainless Steel (1988-2002) Ferritic Stainless Steel (Iron 83%,Chromium17%)
7.
Cleaning Dirty CoinsThe collector should take great care in the cleaning of the coins. The coins should never be cleaned with any chemical or wire brush. The coins should be cleaned as under :
(a) Silver Coins may be cleaned with soap or tooth-paste and rubbed between the thumb and the index finger.
(b) Copper, brass and bronze coins should be dipped in sour curd (Khatta dahi) and rubbed with soft tooth-brush. The coins can also be cleaned in Tamarind (Imli) and later and Lemon juice diluted with water.
(c) Copper and Bronze coins may have greenish deposit (Patina) on them. These can be cleaned by dipping them in coconut or seasame oil and rubbing with hard tooth-brush. Tamarind water or Lemon juice can also be used. Any edible oil may also be applied to all obsolete copper; Bronze and Brass Coins, for protecting them from the greenish deposit. However nothing should be applied to UNC coins.
8.
Coins for CSelection of ollection based on condition (i)
Good Coin: A coin which remained much in circulation but its legend on both sides should be easily legible. There should be no CUT or DENTURE mark on the coin. Such coins get minimum price, which is 15-20percentabove the metal value.
(ii)
Very Good Coin: A coin which remained less in circulation but its legend on obverse and Reverse should be legible without the help of magnifying glass and its letters and figure should be tangible if touched by the index finger. There should not be any cut or denture mark and also no spot of any chemical. Such coins gather more value than good coins, but these should be kept carefully in such a way that they don’t lose their shine and luster by rubbing to each other.
(iii)
Un-Circulated (UNC) Coin : The Coins for daily use by general public are regularly issued by Reserve Bank of India. All these coins are uncirculated coins (UNC) at the time of issue. However these coins should be collected a few, as otherwise there maybe shortage of change in the country and it will be less economical. UNC coins are also issued for collectors by India Government Mints, Mumbai& Kolkata, in Special packing. These coins are sold at premium. The Mints advertise in prominent newspapers for sale and advance orders are to be booked and paid in advance by bank draft at the following address:
The General Manager,
India Government Mint,
Shaheed Bhagat Singh Marg,
Fort, Mumbai- 400 023 Or
The General Manager,
India Government Mint
Alipore , Kolkata- 700 0539.
Proof setsProof sets are issued by Government of India Mints Mumbai & Kolkata. The sets contain all the coins to be issued, with mirror-like luster and are specially packed. It also carries specification like: Weight, Diameter. Metal Contents and Serration on the edge. The coins in the proof set of Mumbai have a special Mint mark "B" or "M" under the date on the reverse side. These coins are also sold at higher premium than UNC Coins. The Mint advertises for sale and advance orders are to be booked and paid in advance by bank draft, as in case of UNC sets as stated above. There is no mint mark of Calcutta/Kolkata Mint on proof coins also.
10.
Mints In India : EAST INDIA COMPANY set up the following three mints in the seventeenth and eighteenth century:-
(a) MADRAS MINT in 1640 A.D.
(b) BOMBAY MINT in 1671 A.D.
(c) CALCUTTA MINT in 1759 A.D.
These mints were again reset up as bigger one and with the latest technology, at Bombay & Calcutta in 1829 A.D. However Madras Mint was closed in1869.
(i) Before1947, i.e. pre-partition of India.
There were four mints, namely at Bombay, Calcutta, Lahore and Madras.
(ii) After 1947, i.e. Post partition of India.
There are four mints, namely Bombay, Calcutta, Hyderabad and Noida. After minting, they hand over the Coins to the respective Reserve Banks of India, within their zones for putting into circulation.
(iii) Due to scarcity of Coins, the Govt. of India got coins minted from several foreign mints.
11.
Card Board &Thick Paper CoinsDuring the British India period many states issued coins made of thick paper and card-board, in smaller denominations for their Local use. These coins were issued in addition to the coins issued by British Government of India. Queen Victoria had, after the Independence War of 1857, given the privilege to the Indian Princely States to issue coins in metal and paper, in their own names. The paper and card board coins Were issued by smaller states who could not afford to issue the metal currency .Though there were more than 500 princely states and Estates, but only 110 could issue their own currency.
12.
Legend on Coins. You will find URDU legend on almost all the coins from 1835 to 1947.In addition to URDU legend, TELGU & BENGALI legends are also found on coins from 1907-1947.
13.
Commemorative CoinsNo commemorative coin was issued from 1835-1964 AD. First Commemorative coins set of two coins, was issued of Shri Jawaharlal Nehru on 14-11-1964. Since 1964 commemorative coins in all the denominations have been issued except 1, 2, and 3 paisa coins, on different themes.
14.
Weight of CoinsWeight of all the coins from 1835-1956 is in Grains/grams and from 1957-2002 is in Grams. One gram is equal to 15.432 grains.
180 grains are equal to 1 Tola= 12 Mashe= 96 Ratties = 11.66 grams.
15.
Kowri & Phooti Kowri, Pie &DamriKowri & Phooti Kowri, Pie &Damri, were the lowest denominations in India during the period prior to 1950.
In 1833 A.D.2400 Cowries = 1 Rupee =64 pices/paise=192 pies=256 Damries
In 1900 A.D.1800 Cowries = 1 Rupee=64 paise/pices=192 pies
In 1950 A.D. 640 Cowries = 1 Rupee = 64 pices/paise=192 pies=960 Ries
3 Phooti Cowries=1 Cowri
Phooti Cowri or Kani Cowri means Punched, Damaged/Broken (at Top).
(This ratio was constant before 1936 A.D.Later on Phooti Cowri was not in use, being the smallest denomination & rise in prices due to world war - II)
These Cowries were in circulation as lowest denomination for use as media of Transaction in those days up to 1950 A.D.
15.
MONETARY SYSTEM:
Coinage for whole India (Including Pakistan &Bangladesh & Burma, except Goa, Daman &Diu)
1 pie = 1/12 Anna (One Twelfth Anna)
3 Pies = 1 paisa / pice (One Quarter Anna)
2 Half pices or 2 Dhelas = 1 Pice ( one quarter Anna)
12 Pies = 1Anna
4 Pices = 1Anna
16 Anna’s = 1 Rupee
15 Rupees = 1 Mohur(Gold)
Numismatic TermsThe glossary will help you understand terms and acronyms commonly used in the field of coin collecting, or numismatics.
•
Abrasions - Light rubbing or scuffing from friction, not to be confused with hairlines or bag marks.
•
Adjustment marks - Small striations or file marks found on early United States coins. Made during planchet preparation (before striking) by drawing a file across the planchet to remove excess metal, resulting in a series of parallel grooves.This was done to reduce the planchet to its proper weight.
•
Alloy - A combination of two or more metals.
•
Annealing - The heating and cooling process by which planchets are softened to allow the metal to flow more smoothly during the strike.
•
Bag mark - A surface mark, usually in the form of a nick, acquired by a coin when it came into contact with others in a mint bag. Bag marks are most common on large and heavy silver and gold coins.
•
Blemishes - Minor nicks, marks, flaws, or spots of discoloration that mar the surface of a coin.
•
Bronze - An alloy of copper, zinc, and tin.
•
Bullion - Uncoined gold or silver in the form of ingots or plate.
•
Business strike - A coin intended for circulation in the channels of commerce (in contrast to a proof coin specifically struck for collectors).
•
Choice - An adjective used to describe an especially select specimen of a given grade. For example, Choice AU-55 represents an especially select About Uncirculated coin (typical About Uncirculated being AU-50).
•
Cleaning - Refers to removing dirt or otherwise altering the appearance of a coin through the use of abrasive materials that mar or scratch the surface in a detectable fashion.
•
Commemorative - A coin issued to mark a special event or to honor an outstanding person.
•
Counter stamp - A design, group of letters, or other mark stamped on a coin for special identification or advertising purposes. Counterstamped coins are graded the way regular (uncounterstamped) coins are, but the nature and condition of the counterstamp must also be described.
•
DDO or D.D.O. - Doubled Die Obverse, an obverse die which exhibits doubled images in one or more places.
•
DDR or D.D.R. - Doubled Die Reverse, a reverse die which exhibits doubled images in one or more places.
•
Denticles or dentils - The tooth like raised design around the rims of some coins. They are part of the die design.
•
Designer - The artist who creates a coin's principal devices.
•
Details - Small features and fine lines in a coin design. Particularly those seen in hair, leaves, wreaths and feathers.
•
Die - A metal object used to impress a design into a planchet. Dies are usually engraved incuse, so that the devices and inscriptions they produce will be in relief.
•
Dipping - The act of removing tarnish, surface dirt, or changing the coloration of a coin by applying chemicals, or otherwise artificially treating it with liquids.
•
Disme - The early spelling of the word "dime," one tenth of a dollar.
•
Double eagle - A United States twenty dollar gold coin.
•
Eagle - A United States ten dollar gold coin.
•
Edge - The area which borders a coin's surface. Also referred to as coin's "third side." Edges of United States coins may be Reeded, lettered or plain.
•
Electrotype - A counterfeit coin made by the electroplating process.
•
Engraver - A person who cuts a design into a coinage die.
•
Field - The portion of a coin's surface not used for a design or inscription.
•
Fineness - Purity of gold or silver, normally expressed in the terms of one thousand parts.
•
Grade - The condition or amount of wear that a coin has received. Generally, the less wear a given coin has received, the more valuable it is. Coins are graded on the A.N.A. numerical system from About Good-3 to Perfect Uncirculated-70.
•
Hairlines - A series of minute lines or scratches, usually visible in the field of a coin, sometimes caused by cleaning or polishing.
•
Half eagle - A United States five dollar gold coin.
•
Hub or hob - A metal object with the intended coin design in relief on one end as it would appear on the finished coin. It is used to produce dies.
•
Incuse - The design of a coin which has been impressed below the coin's surface. When the design is raised above the coin's surface, it is said to be in relief.
•
"Key date" - Slang usually indicating the rarest (and therefore most expensive)date-and-mint of a particular coin series.
•
Legend - The principal inscription on a coin.
•
lg. - Abbreviation for the word "large,"generally referring to a date or mintmark.
•
Luster - The glossy appearance of the surface of a coin. Although normally brilliant, with time luster may become dull, frosty, spotted or discolored.
•
Milled edge - A raised rim around the outer surface of a coin. Not to be confused with the Reeded or serrated narrow edge of the coin.
•
Mintmark - A symbol, usually a small letter, used to indicate at which mint a particular coin was struck.
•
Modification - A minor alteration in the basic design of a coin.
•
Motto - A word or phrase on a coin.
•
Mule - A coin struck from obverse and reverse dies not originally intended to be used together.
•
NGC or N.G.C. - Numismatic Guaranty Corporation of America, a third-party grading service.
•
Nick - A small mark on a coin caused by another coin bumping against it or by contact with a rough or sharp object.
•
Numismatics - Area of study relating to coins, medals, or similar items.
•
Numismatist - A student or collector of coins, medals, or similar items.
•
Obverse - The front or fact side of a coin, usually the side with the date or the principal design. Opposite of the reverse side.
•
Overdate - The date made by superimposing one or more different numbers on a previously dated die.
•
Oxidation - The formulation of oxides or tarnish on the surface of a coin from exposure to air, dampness, industrial fumes, or other elements.
•
Pattern - A prototype of a proposed coin design.
•
Patina - A green or brown surface film found on ancient copper and bronze coins caused by oxidation over a long period of time.
•
PCGS or P.C.G.S. - Professional Coin Grading Service, a third party grading service founded in 1986 by David Hall. PCGS was the first third party grading service to sonically seal each coin in a plastic container with its grade and registration number. These plastic containers became popularly referred to "slabs."
•
Planchet - Disk on which a design is impressed to make a coin, metal or token.
•
Proof - Coins struck for collectors and using specially polished or otherwise prepared dies.
•
Proof like - Used to describe any uncirculated coin with a mirror like reflective surface but lacking the full characteristics of a proof.
•
Quarter eagle - A United States two and one half dollar gold coin.
•
Reeded edge - The edge of a coin with grooved lines that run vertically around its perimeter. This type of edge is found on all current United States coins above the five cent denomination.
•
Relief - Any part of a coin's design that is raised above the coin's surface. When the design has been impressed below the coin's surface, it is said to be incuse.
•
Restrike -A coin struck from genuine dies at a date later than its original issue.
•
Reverse - The side of a coin carrying the design of lesser importance. Opposite of the obverse side.
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Rim - The raised portion of a coin encircling the obverse and reverse which protects the designs of the coin from wear.
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Scratch - A deep line or groove in a coin caused by contact with a sharp or rough object.
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Series - One coin of each year issued from each mint of a specific design and denomination, e.g., Standing Liberty Quarters 1916-1930.
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Slab - Slang term for a coin that has been graded, registered and encapsulated (sonically sealed) in a plastic container by a third party grading service.
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sm. - Abbreviation for the word "small," generally referring to a date or mintmark.
•
Striations - Thin, light raised lines on the surface of a coin, caused by excessive polishing of the die.
•
Striking - Refers to the process by which a coin is minted. Also refers to the sharpness of design details. A sharp strike or strong strike is one with all of the details struck very sharply; a weak strike has the details lightly impressed at the time of coining.
•
Toning - Natural patination or discoloration of a coin's surface caused by the atmosphere over a long period of time. Toning is often very attractive, and many collectors prefer coins with this feature.
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Truncation - The sharply cut off bottom edge of a portrait.
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Type - A coin's basic distinguishing design.
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Unique - An item of which only one specimen is known to exist.
•
Variety - A minor change from the basic type design of a coin.
•
Weak strike - A coin with certain areas of its details (in the areas of high relief) not fully formed because of the hardness of alloy, insufficient striking pressure or improper die spacing.
•
Wear - The abrasion of metal from a coin's surface caused by normal handling or circulation.
•
Whizzing - The artificial treatment of a coin by wire brushing, acid dipping, or otherwise removing metal from the coin's surface to give it the artificial appearance of being in a higher grade. Whizzing is an alteration, not a grade or condition.
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