1939-06-19--1944-09-20 Printed matter by air mail over the North Atlantic to North America, 5-10 gr
Printed matter fee first rate 0-50 gr, 5 öre (1924-08-01--1948-03-31)
Air fee 55 öre/5 gr, 110 öre (1939-06-19--1944-09-20) (from 1942-05-06 higher fees via England)
