numisport Posted October 26, 2019 Share Posted October 26, 2019 1939 coin looks like a proof Link to comment Share on other sites More sharing options...
RWB Posted October 26, 2019 Share Posted October 26, 2019 The very simple, stable measurement device outlined above would easily distinguish a brilliant proof from a non-proof. It could also be calibrated to identify matte proof cents and nickels from circulation strikes. Link to comment Share on other sites More sharing options...