1955 AIR MAIL EARL'S COURT, LONDON TO MONTREAL CANADA WITH KGVI 2/6 YELLOW-GREEN (SG509). Envelope, 230 x 102 air mail Earl's Court, London to Montreal Canada with fine 2/6 yellow-green (SG509) cancelled 'EARLS COURT' date stamp 25 JLY 1955. (Ref 104019).