I got this in a little packet that says "PFA the Swedish Post Office". It features three unused postcards featuring Swedish stamps and this booklet, which has non denominated stamps.
In my Michel it says these were trial or sample prints that were given away for advertising purposes. These were printed in only blue or like yours multi colored. The finished stamp is from 1967 and had a face value of 4.50 Kr. The stamp shows the pulpit and Alter in the Dome church in Uppsala Sweden.
