1 May 1975 - 31 Dec 1975
US foreign surface letter rate 18 c
Swedish foreign surface letter rate 110 öre
US handstamp shows amount to pay in US cents (normally double deficiency) and US surface letter rate.
In Sweden the indicated fraction multiplied by 110 and rounded up to nearest 5 öre was normally paid by affixing stamps on the item.

For further details and larger image, click on the item

Letter with 10 cent

Letter with 10 cent, arrived in later fee period

Letter with 16 cent

Unfranked post card

Air mail letter with 13 cent

Double rate air mail letter with 26 cent

Air mail postcard with 13 cent

Customs fees 400 öre (rate period not known)