Upper Silesia 1920-21 Plebiscite issues, colln of 50 diff mint & used (mostly FU) on 5 pages. Noted 1st issue SG 7-9 FU, 2nd issue set of 17 used, 1921 Plebiscite "20 mars 1921." ovpts. Mint (incl SG 36-37, 39-41, 45-46), & Official set SG O25-31 mint. SG cat £251.