1973 S Copper-Nickel Clad (2,760,339 p) This is the first copper-nickel proof dollar issued by the mint, and was included in proof sets of 1973. The reverse features chief engraver Frank Gasparro's adaptation of the Apollo XI insignia created by astronauts Michael Collins and James Cooper for NASA. This beautiful coin is the second-lowest mintage of the copper-nickel proofs.
