I have a number of Swedish postage due labels ("Lösen" in Swedish) that were put in use after the normal postage due stamps were abolished. The FACIT catalogue does not mention them at all and in Michel I can only find a small footnote after the postage due section that states specialists distinguish 9 different types, however there is no further explanation. Online I have not been able to find anything either, so I would like to know if there is anyone here who has more info.
It appears I have 6 different types (or 5 with one variety in two perforation versions). The one at the bottom appears to be Finnish, as it is bilingual Finnish and Swedish and has the currency in Markka.



www.marktplaats.nl/u/jan-simon/468910/