The Three Old Proof Years: 1873, 1877, and 1878:
I find these years interesting. Two-Cent pieces ended their short production with 600 proofs in 1873, and the silver three-cent pieces did likewise. Nickel Three-Cent pieces minted business strikes in 1873, but only proofs in 1877 and 1878, and nickels did likewise. I have pondered over these strange coins, but unsuccessfully. Can anybody explain these three strange years?