1945 REGISTERED MAIL LONDON TO NEW YORK/BPA ASSN. Registered envelope London to New York with KGVI ½d pale green (SG485) and 6d purple (SG470), London cancels, on front "PASSED BY BRITISH PHILATELIC ASSN...." cachet and at left STANLEY GIBBONS LTD/c/o BRITISH PHILATELIC ASSN.... label. Various censor/customs cachets and backstamped NEW YORK 18.12.1944. (Ref 100555).