1976-S Deep Cameo Proof Bicentennial Quarter While some of the silver quarters minted in San Francisco entered circulation, ...

The coins came from an uncirculated proof set of six coins sold in 1975 for $7. The coins should have had the “S” on them but ...

and 4 million proof 40% silver coins). Here’s a look at seven other bicentennial quarters that have sold for more than $1,000 ...