1979 & 1981 Type 1 & 2 Proof Coins: How to Spot Them

When it comes to the 1979-S and 1981 Proof coins, the type of mint mark can alter a coin’s value by quite a bit. Even if the difference is slight, it still means a lot in the eyes of a collector. As a general rule, throughout numismatics, a minor difference can be a big deal, especially […]