British Guiana. (Denmark). 1949. Air Mail envelope addressed to Denmark bearing SG 293, 12c orange and SG 311, 6c blue tied by Georgetown roller with instructional 'Via Airmail To New York/ Thence by Steamer' in carmine and 'Air Mail to New York only, thence/ by Surface Mail' hand-stamp on face in violet with Kobenhavn arrival. Very fine.
Lovely item with black vertical lines JUSQU'A mark applied at office of exchange.