Newfoundland C51930 (September 25) "Columbia" Flight cover to London franked with the special Trans Atlantic flight surcharge 50c on 36c olive green (Position 2 in the setting of four), intact perforations and very well tied by unusually clear St. John's SEP 25 1130AM 1930 slogan cancel; on reverse a superb strike of Harbour Grace AM OC 9 30 flight departure postmark, London 13 OC 30 receiver on front. A visually striking example of this sought after pioneer Trans