25 Paise Copper Nickel Extra Metal Error Coin 1986 Year Calcutta Mint RBI Mistake Coin

This exceptional 25 Paise coin from 1986 represents a fascinating piece of Indian numismatic history minted at the Calcutta Mint under RBI authorization. What makes this specimen truly remarkable is its documented extra metal error—a rare minting anomaly where excess metal was inadvertently incorporated during production, creating a distinctive variant that deviates from standard specifications.

Composed of copper-nickel alloy, this coin belongs to the post-independence era of Indian coinage and reflects the Republic of India’s monetary system during the mid-1980s. The Calcutta Mint’s production during this period is highly regarded among collectors for quality craftsmanship.

Error coins are among the most sought-after items in numismatic circles, as they represent genuine manufacturing mistakes from official mints—making each piece unique and irreplaceable. This particular extra metal error significantly enhances its collectible appeal and investment potential. Collectors value such anomalies for their rarity, historical documentation, and the insight they provide into mint operations.

Whether you’re a seasoned numismatist or beginning your error coin collection, this authenticated 1986 Calcutta Mint piece offers both historical significance and genuine investment value. Its scarcity in the collector’s market makes it a prized acquisition.

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