David Hall: The 1919-S is scarce in circulated grades, rare in Mint State, and a major rarity in Gem condition. Most of the killer rarities in the Buffalo nickel series are the 1918 thru 1927 San Francisco issues. They are all extremely rare in Gem MS65 condition and almost impossiblke to find any better. For the 1919-S, only a few dozen Gems are known. Strike can often be a problem, as can a lack of decent luster. In Gem condition, the 1919-S is one of the key dates in the series.