International letter with perfin "R&Co" in the stamp. The letter is franked correctly with 20øre, which was the rate for [...]
H34 Skandinavisk Patent-Bureau
Morten Mikkelsen2020-02-28T19:48:16+01:00International post card with perfin "H.&H." in the stamp. The post card is franked correctly with 10 øre, which was [...]