1878 Shield Nickel. Proof-66 (PCGS).Virtually brilliant with a bright silver-gray appearance, this charming specimen is a conditionally scarce survivor from a Proof-only mintage of 2,350 coins. Fully struck with a lively satin finish from the dies.PCGS# 3832. NGC ID: 276V.From the Collection of James Allaire Millholland, 1842-1911.