International letter with perfin "OÆ" in the stamp. The letter is franked correctly with 30 øre, which was the rate [...]
O21 Odense Staalskibsværft
Morten Mikkelsen2020-08-29T16:57:59+02:00Local letter with perfin "OS" in the stamps. The letter is franked correctly with 10 øre, which was the rate [...]

O20 Ole Sørensen & Co A/S
Morten Mikkelsen2020-08-29T16:49:08+02:00International registered letter with perfin "O.S." in the stamps. The letter is franked correctly with 2 x 25 øre = [...]
O19 Ole Sørensen & Co. A/S
Morten Mikkelsen2020-08-29T16:43:01+02:00International letter with perfin "O.S." in the stamps. The letter is franked correctly with 2 x 10 + 5 øre [...]