140 öre
1921-07-01--1922-05-31 Letter to Finland insured for 480-720 kr, second rate: 140 öre
Letter fee, second rate, 60 öre (1921-02-01--1922-05-31)
Insurance fee, 30 öre+16öre/240 kr rounded up to next 5 öre: 80 öre (1921-07-01--1922-05-31)