Domestic letter with perfin "S.W.B." in the stamp. The letter is franked correctly with 20 øre, which was the rate [...]

Domestic letter with perfin "S.W.B." in the stamp. The letter is franked correctly with 20 øre, which was the rate [...]
Domestic letter with perfin "P.U.S." in the stamp. The letter is franked correctly with 20 øre, which was the rate [...]
International letter with perfin "C.A." in the stamp. The letter is franked correctly with 2.10 kroner, 40 øre was the [...]