Proof sets made from 68 onward were minted in San Francisco, and have an "S" mintmark. So anything with out a mint mark or with a "d" are automatically not proofs.
Starting in 70 these later proofs were all cameo so without a cameo even the "s" mints would not be a proof.
68 and 9 were a mirrored finish.
Go to ebay and search for Lincoln memorial proofs and you can see tons of great examples.
Starting in 70 these later proofs were all cameo so without a cameo even the "s" mints would not be a proof.
68 and 9 were a mirrored finish.
Go to ebay and search for Lincoln memorial proofs and you can see tons of great examples.


























