RUSSIA 31 MAY 1942 STAMP DEALER PRINTED ENV METER FRANKING CENSORED EMPIRE 2310Mezhdunarodnaja Kniga Philatelic Department printed envelope from Moscow to Whitfield King & Co Ipswich Suffolk GB; 50K single franking; Moscow Etranger cancels; Opened By Examiner 2310 censor label; Moscow 26 censor + tape.