1932 UNDELIVERED MAIL LONDON USAGE. Window envelope (210x90), slight soiling, used within London with KGV ½d meter mark dated 14 XI 32 , on reverse 'Not Known'. On front various date stamps and instructionals, including ½ postage due cancelled EAST HAM 25 NO 32 and additional manuscript 'Not Known/Please do not return this a forth time or we will send it to the G.P.O." (Ref 96377).
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