Domestic parcel letter with perfin "G.S." in the stamp. The letter is franked correctly with 3 x 20 + 10 + [...]

Domestic parcel letter with perfin "G.S." in the stamp. The letter is franked correctly with 3 x 20 + 10 + [...]
Domestic parcel letter with perfin "H" in the stamp. The letter is franked correctly with 5 + 3 x 25 [...]
Domestic parcel letter with perfin "H" in the stamp. The letter is franked correctly with 10 + 10 kr = [...]
Domestic registered parcel letter with perfin "H" in the stamp. The letter isn't franked correctly with 10 x 3,80 kr [...]