1950 REGISTERED AIRMAIL HARMER OF LONDON TO HARMER OF NEW YORK USA, KGVI 10d AND 2/6 YELLOW-GREEN (SG476b). 1951 registered airmail envelope Harmer of London to Harmer, New York, U.S.A. uprated KGVI 10d (SG474) and very fine 2/6 yellow-green (SG476b) tied 'LONDON' date stamp 3 MR 50. On front B.P.A. cachet and within fine original invoice detailing philatelic purchases totalling £536.00. (Ref 143793).
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