This mixed lot includes proof quarters made of 90% silver. The coins have been circulated and are ungraded. They were minted by the U.S. Mint and are a great addition to any collection. The lot contains a variety of coins from 1946 to 1964, making it a great investment for any collector or investor. The coins were struck as business strikes and have a total precious metal content of 90%. This lot is perfect for those interested in adding to their silver collection or those who are looking for a unique investment opportunity.