Mint Silver Proof Set includes 5 uncirculated Proof coins denominations ranging from 1 cent to 50 cents. The Franklin, Washington and Roosevelt are composed of 90% silver. This set was minted in Philadelphia and comes in the original flat pack envelope from the U. This set does not have the Mint Decal usually found in these sets. I believe this was missed at the Mint. No evident of tampering with Cello. The coins are struck in proof quality, making them highly desirable for collectors looking for pristine and authentic pieces from 1955.