36th International Auction- part 2- philately & picture postcards

1972, 16 Aug, "Double Headed Shaikh" issues, 10 dh. (2) and 15 dh. (3), attractive franking on reverse of commercial airmail cover, sender "United Bank Limited" and addressed to Karachi, some (rather unobstrusive) imperfections, overall attractive appearance. An extremely rare franking, these stamps have been "used" for philatelic puposes mainly, on commercial cover very difficult to find!