This is MD, the flat shelf-like appearance. Remember thar proofs are struck twice, that just give twice the possibility for movement after strike(bounce) as normal business strikes. It is quite common on proof coins and absolutley horrendous on the 68-70 proofs, finding one that has no MD is the prize in my opinion! (which I haven't had great success at either!)
Edited by Crazyb0
04/27/2018 02:52 am