Description: Government in Exile Ship Letter: № 1 SHIP - LONDON, ENGLAND, May 1943. Philatelic letter with full set of the First Govt. in Exile Issue on genuinely mailed letter with two USA censorship cachets and BOSTON, Massachusetts transit for 18.05. 1943. Very rare. (Most of the letters found in the marketplace are cancelled to order with rubber stamp addresses without evidence of posting).