Background-Knowledge: Manufacturer Münchner-Kunst:

The name “Münchner-Kunst” is hardly known. This is mainly due to the fact that they didn’t write their name on the back, as Mertens-Kunst did and Hellerkunst, too. You won’t find a logo, either. The main clue are the numbers on the back: They are stamped on, huge and always have three figures. Sometimes you will find those three figures and the “Münchner-Kunst” as well, but those are rare exceptions. It’s a pity if you realize which great motives they did. Some very funny and exceptional.