Watch List notes:

World - Russia - PCOCP (R.S.F.S.R.) (1921-1925)
50 Kopeks 1921 (Leningrad) - A.F. Hartman
Description
Obv. National arms within beaded circle
Rev. Value in center of star within beaded circle
Plain edge with inscription

Ref. : KM Y 83
UNC - PCGS MS64
Metal: Silver
27.00 mm - 10.00 gr