1 Jan 1892 to 30 Sep 1907
US foreign surface letter rate 5 c
US Conversion rate 1 US cent = 5 goldcentimes
Swedish conversion rate 1 goldcentime = 0.8 öre (for postcards and printed matters before 28 March 1892 1 goldcentine = 1 öre)
US handstamp shows the amount missing in goldcentimes.
In Sweden the indicated amount was doubled and multiplied by 0.8 (for postcards and printed matters before 28 March 1892; 1.0) and marked on
the item. The amount due was paid in cash.
Double rate
letter with 5 cent. Correct rate 10 cent. Shortpaid 5 cent. US due handstamps
shows deficiency in centimes 5x5=25. In Sweden the amount was doubled and
multiplied with 0.8 and marked in manuscript on the item 2x25x0.8=40. The
amount was paid in cash.