Stamp Auction No. 6

1953 First Flight Covers, London - Tokyo by B.O.A.C. Comet Jetliner Service, bearing Archaeological series 1a to 4a and 8a, SG312-18 and SG318, on four covers, 2 covers tied by “CALCUTTA G.P.O.” CDS addressed to Japan and Philippines respectively, delivery CDS on reverse, 2 covers tied by “AIR PORT /SORTING/14 APR./53/NEW DELHI” boxed cancel in black and a “BUY/NATIONAL SAVINGS/CERTIFICATE” boxed slogan cancel, addressed to Japan and Philippines respectively, delivery CDS on reverse. Fine.