Domestic letter with perfin "B.T." in the stamp. The letter is franked correctly with 30 øre, which was the rate [...]

Domestic letter with perfin "B.T." in the stamp. The letter is franked correctly with 30 øre, which was the rate [...]
Domestic letter with perfin "W.S./C." in the stamp. The letter is franked correctly as printed matter with 4 øre, which [...]
Domestic post card with perfin "N.A." in the stamp. The letter is franked correctly as printed matter with 7 øre, [...]
Domestic letter with perfin "LB" in the stamps. The post card is franked correctly with 15 øre, which was the [...]