Ceylon: Short Paid Aerogramme to Canada 1959

Ceylon 40 cents aerogramme uprated with a 10 cents stamp and sent from Kandy (9 11 59) to Vancouver, Canada.

The aerogramme was taxed 13 UPU ctms short paid and attracted a 4 cents postage due in Canada.
At the time of posting, the aerogramme rate to Canada was 60 cents. Double the deficiency (20 cents) was converted to UPU ctms at 10 cents = 6.5 UPU ctms.

Upon arrival in Canada, the 4 cents postage due was calculated based on a conversion rate of 1 cent = 3 UPU ctms.

Boxed “4 cents due” handstamp in red and a 4 cents postage due stamp added.