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

Domestic letter with perfin "SK" in the stamp. The letter is franked correctly with 20 øre, which was the rate [...]
Domestic insured letter with perfin "Job." in the stamp. The letter is franked correctly with 60 + 5 øre = [...]