International parcel letter with perfin "BP" in the stamp. The letter is franked with 4 x 2 kr + 1.20 [...]

Parcel letter with perfin "C.O." in the stamps. The letter is franked  with 5 kr + 4,10 kr + 60 [...]

Parcel send by ferry with perfin "53" in the stamps. The letter is franked correctly with 1 kr + 50 [...]

International letter with perfin "D." in the stamp. The letter is franked with 20 øre, which was the rate for [...]