All 1937 proof Buffalo nickels were made with the brilliant finish introduced later in the previous year. With a mintage of 5,769 this was the largest production of proof Buffalo nickels for the entire series, and the vast majority are still around today for collectors. Well more than half are known in PR65 or better, and indeed the bulk of these proofs are encountered in the PR64-67 range. Several dozen have been certified by PCGS and NGC in PR68, and PCGS has graded two as PR69. 1937 marked the last year of proof production for the Buffalo nickel, as the following year saw the introduction of the Jefferson nickel, which exclusively represented the proof nickels of 1938.