Domestic post card with perfin "R.A." in the stamp. The post card is franked correctly as printed matter with 6 [...]

Domestic letter with perfin "R.A.S." in the stamp. The letter is franked correctly with 10 øre, which was the rate [...]

International post card  with perfin "R.B." in the stamp. The letter is franked correctly with 5 + 5 = 10 [...]

International letter with perfin "R&C" in the stamp. The post card is franked correctly with 30 øre, which was the [...]