COIN PRICE GUIDE SECTION 9

COIN PRICE GUIDE — SECTION 9
ERROR COINS PREMIUM GUIDE
Approximate Market Values for Indian Collectors

Compiled by AINCERT
All India Numismatics Council of Educational Research and Training
Website: sites.google.com/view/aincert
Email: ujjwalbup@gmail.com
"Don't talk about money, talk about history."

IMPORTANT NOTICE

Error coin pricing is among the most complex areas of numismatics. Values depend heavily on the type and severity of the error, the rarity of the base coin, the condition and whether the error has been authenticated by a reputable grading service. All prices listed are approximate ranges based on Marudhar Arts auction results and Indian collector market data. AINCERT recommends authentication of all error coins before buying or selling at significant prices. Prices are listed in Indian Rupees.

TYPES OF MINT ERRORS AND THEIR PREMIUMS

Die Crack Error. A crack in the mint die transfers to the coin as a raised line. Minor die crack on a common coin: 2 to 5 times standard value. Major die crack on a common coin: 5 to 15 times standard value. Die crack on a rare coin or denomination: 10 to 30 times standard value.

Planchet Void Error. A gas bubble or impurity in the metal blank creates a hole or void on the coin surface. Minor void on common coin: 3 to 8 times standard value. Major void on common coin: 8 to 20 times standard value.

Off-Centre Strike Error. The coin is struck off-centre, leaving a portion of the design missing and a crescent of blank metal visible. Ten percent off-centre: 2 to 4 times standard value. Twenty-five percent off-centre: 5 to 10 times standard value. Fifty percent off-centre: 10 to 25 times standard value. Seventy-five percent or more off-centre: 20 to 50 times standard value.

Double Strike Error. The coin is struck twice, creating a doubled or ghost image. Minor doubling on common coin: 3 to 8 times standard value. Major doubling clearly visible: 8 to 25 times standard value.

Brockage Error. A previously struck coin sticks to the die and leaves a mirror image impression on the next blank. Any denomination: 15 to 50 times standard value.

Mule Error. A coin struck with mismatched obverse and reverse dies from different denominations or years. Any denomination: 20 to 100 times standard value.

Clipped Planchet Error. The metal blank is clipped before striking, creating a straight or curved edge. Minor clip: 2 to 5 times standard value. Major clip: 5 to 15 times standard value.

Wrong Planchet Error. A coin struck on a planchet intended for a different denomination. Any denomination: 15 to 60 times standard value.

Rotated Die Error. The reverse die is rotated at an unexpected angle relative to the obverse. Minor rotation: 2 to 4 times standard value. Significant rotation of 90 degrees: 5 to 15 times standard value. Full 180 degree rotation: 10 to 25 times standard value.

SPECIFIC ERROR COIN PRICE RANGES

Republic India 25 Paise 1975, die crack near Ashoka Lions. Fine condition: Rs. 100 to Rs. 300. Very Fine condition: Rs. 300 to Rs. 800. Extremely Fine condition: Rs. 800 to Rs. 2,000.

Republic India 1 Rupee 1979 Wheat Stalk, mint error. Fine condition: Rs. 150 to Rs. 400. Very Fine condition: Rs. 400 to Rs. 1,000. Extremely Fine condition: Rs. 1,000 to Rs. 2,500.

Republic India 10 Rupees bimetallic, any error type. Fine condition: Rs. 300 to Rs. 800. Very Fine condition: Rs. 800 to Rs. 2,000. Extremely Fine condition: Rs. 2,000 to Rs. 5,000.

British India Half Anna Victoria 1882, error coin. Fine condition: Rs. 600 to Rs. 1,500. Very Fine condition: Rs. 1,500 to Rs. 4,000. Extremely Fine condition: Rs. 4,000 to Rs. 10,000.

Gwalior State any denomination, error coin. Fine condition: Rs. 1,000 to Rs. 3,000. Very Fine condition: Rs. 3,000 to Rs. 8,000. Extremely Fine condition: Rs. 8,000 to Rs. 20,000.

East India Company 1835 William IV Silver Rupee, error coin, common. Fine condition: Rs. 3,000 to Rs. 8,000. Very Fine condition: Rs. 8,000 to Rs. 20,000. Extremely Fine condition: Rs. 20,000 to Rs. 50,000. Uncirculated with error: Rs. 50,000 to Rs. 1,50,000 and above.

Ancient punch-marked Karshapana, any error. Fine condition: Rs. 2,000 to Rs. 6,000. Very Fine condition: Rs. 6,000 to Rs. 15,000.

HOW TO AUTHENTICATE AN ERROR COIN

The first step is visual examination under a 10x loupe to confirm the error is raised and part of the coin rather than post-mint damage. Post-mint damage such as gouges, scratches or dents will be sunken and irregular. A genuine mint error will be part of the coin's surface and consistent with the metal flow of the strike.

The second step is weight and dimension verification. Most errors do not significantly affect the coin's weight, though planchet errors may result in a lighter coin. Any significant weight deviation from the standard should be investigated further.

The third step is authentication by a reputable grading service. For errors valued above Rs. 5,000, submission to NGC, PCGS or NGS is strongly recommended. Their authentication guarantees the error is genuine and significantly increases the coin's marketability and value.

The fourth step is documentation. Record the error type, date of discovery, source of acquisition and any prior ownership history. Provenance from a reputable source such as Marudhar Arts adds significant value.

AINCERT ARCHIER GRADING FOR ERROR COINS

Error coins are graded on the ARCHIER Scale in the same manner as regular coins, assessing surface preservation, strike quality, luster, eye appeal and edge condition. The presence of a mint error does not affect the ARCHIER grade itself but is noted separately in the coin's documentation as an error designation. A coin can simultaneously hold an ARCHIER MS grade and an error designation, indicating that it is both uncirculated and carries a genuine mint error.

AINCERT Copyright 2026
Website: sites.google.com/view/aincert
Email: ujjwalbup@gmail.com
"Don't talk about money, talk about history."