1 Jul 1911 to 30 Sep 1922
US foreign surface letter rate 5 c
US Conversion rate 1 US cent = 5 goldcentimes
Swedish conversion rate 1 goldcentime = 0.8 öre
US handstamp shows amount to pay in goldcentimes, normally double deficiency.
In Sweden indicated amount multiplied by 0.8 was marked on the item. The amount due was normally paid by affixing stamps on the item.
Letter with
4 cent. Correct rate 5 cent. Shortpaid 1 c. US due handstamp indicates
2x1x5=10 centimes. Converted at the rate 0.8 to 8 öre and the amount
due affixed in postage stamps.