There are still two rare dime and a rare bicentennial quarter valued at $50 million each in circulation.

One of the most sought-after coins is the 1916 Mercury dime.  

The Denver Mint, in particular, produced only 264,000 of these dimes, making the 1916-D Mercury dime one of the rarest coins in circulation. 

What makes this dime so valuable is not just its scarcity but also its historical context. 

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Another dime that commands attention is the 1975 No-S Roosevelt dime. 

This coin, part of a special proof set, was mistakenly struck without the mintmark that typically identifies its place of origin. 

The absence of the mintmark on a proof coin is a rare mistake, as proof coins are struck with great care and intended for collectors rather than general circulation.  

These dimes have been valued at over $1 million each due to their uniqueness and the allure of minting errors. 

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