20 Jan 1950 to 31 Oct 1953
US foreign surface letter rate 5 c
US Conversion rate 1 US cent = 5 goldcentimes (during 1949 the US conversion rate changed to 3 goldcentimes)
Swedish conversion rate 1 goldcentime = 1.7 öre
US handstamp shows amount to pay in goldcentimes, normally double deficiency.
In Sweden the indicated amount was multiplied by 1.7 rounded up to nearest 5 öre and marked on the item. The amount due was normally paid by affixing stamps on the item.
Postcard with 1 cent. Correct rate 3 cent. Shortpaid 2 cent. US due manuscript shows double deficiency 2x2x3=12 centimes. Amount due in Sweden 12x1.7=20.4 öre incorrwctly rounded down to 20 öre instead of up to 25 öre. Postage due paid by affixing stamp on the item.