Description
1969 UNDERPAID AIR MAIL CANADA TO KINGSTON ON THAMES. Envelope from Canada to Kingston on Thames with Canadian 4c and 2c cancelled 'LONGUEUIL' 17 11 1969, postage underpaid with Canadian charge mark and UK '1/1 TO PAY POSTAGE UNDERPAID' instructional in green with 1d and 1s postage dues cancelled 'KINGSTON ON THAMES'. (Ref 135905).
