Both cards in EX-NM/NM-MT condition
1977 Carl Yastrzemski raw proof card with blank back
1980 Jerry Remy raw proof card with blank back
These are RARE "1 of 1" production artifacts released by the Topps Vault archives!
They were used to test individual ink plates—specifically the Black plate for the Carl Yastrzemski and the Magenta plate for the Jerry Remy—before the final cards were printed.