1 Oct 1925 to ca. 7 Nov 1936
US foreign surface letter rate 5 c
US Conversion rate 1 US cent = 5 goldcentimes
Swedish conversion rate 1 goldcentime = 1 öre
US handstamp shows amount to pay in goldcentimes, normally double deficiency.
In Sweden the indicated amount multiplied by 1 was marked on the item. The amount due was normally paid by affixing stamps on the item.
Letter with
2 cent. Correct rate 5 cent. Shortpaid 3 cent. US due handstamp indicates
2x3+5=30 centimes. Converted to öre at the rate 1 to 1, and 30 öre
affixed as postage due.