1921S Sovereign rated MS64/CHUNC 838k Minted. exc fields. STG. PCGS Pop/R 54ms/2lwr - highest 1MS64+:1MS65. This Coin rates equal 3rd rarest and is ex/scarce at this rated grade. David Briggs in 50 years to 2019 sighted highest 10ms64 & 1ms65. Given the extended period one would expect duplications from churning. The Standard Head series features a number of highly collectible sovereigns - this is one of them.