India “PASSED BY CENSOR / QUETTA” rare oval crested censor in blue on 1919 “Field Service” cover to UK with “F.P.O. No. 373” on reverse

India used in China – 1920 (21 Mar) picture postcard from Peking, China to England with GV 1a carmine ovpt “C.E.F.” (SG C25) tied by “F.P.O. No.1” and BASE OFFICE alongside