1 Jan 1967 to 30 April 1967
US foreign surface letter rate 11 c
Swedish foreign surface letter rate 70 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 70 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 5 cent

Postal card with 1 c

Unfranked air mail postcard.