What is It?:
A proof dime missing the “S” mintmark from the San Francisco Mint.
Rarity: Only a few were mistakenly released, making it extremely rare.
Proof Coin: Specially struck for collectors, increasing its value.
Value: Can sell for over $500,000.
Identification: Look for a 1975 proof dime with no mintmark.
Collector Appeal: Highly sought after due to its rarity.
Authentication: Get certified by a grading service.
Where to Find: Occasionally appears at auctions or in collections.
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