1899 Indian Head Cent, 1937-d nickels, 2019, Books, Coin Articles, coins questions and answers, Columns, Featured Articles, Key Dates & Rarities, Q&A, three-legged buffalo, US Coins, US Mint Products of the Past Q&A: What is considered to be the most improbable example of a multiple major error coin? December 2, 2019 Coin Update Leave a comment 1937-D nickel three-legs (Regular Strike). Image by PCGS CoinFacts Continue reading on Coin Update News