Bing’s Coins truly appreciates your business. Should you experience any issues i. This offer is for 1 complete 5 Coin set in Sealed Envelope Unopened U. Mint 5-Coin Proof Set in Sealed Flat Pack Envelope is a must-have for collectors. The Franklin, Washington and Roosevelt are all made of silver with a fineness of 0.9. These coins were struck in Philadelphia and are ungraded. The Jefferson and Lincoln coins are made of copper. Mint and is perfect for those interested in American coins. The set also includes a proof strike type, adding to its value. The year of 1956 makes this set a rare find, perfect for coin enthusiasts looking to expand their collection. Don’t miss out on the opportunity to own a piece of American history with this U. Mint 5-Coin Proof Set.