Description
1968 WILDING AND PRE-DECIMAL COMBINATION/INSUFFICIENT AIR MAIL POSTAGE LONDON TO CEYLON. Air mail envelope London to Ceylon with combination of Wilding 1d x 2 and Machin pre-decimal 4d sepia to Ceylon cancelled LONDON 6 MCH 1968. Air mail rate underpaid and good strike boxed cachet 'INSUFFICIENTLY PREPAID/FOR TRANSMISSION BY AIR' in red. (Ref 118506).
