1921-02-01--1921-06-30 Return receipt second rate reg letter outside Scandinavia,single rate
Letter rate 60 öre (1921-02-01--1922-09-30)
Reg fee 20 öre (1920-07-01--1921-06-30)
Rerurn receipt fee 20 öre (affixed on the Return receipt) (1920-07-01--1921-06-30)
