Hello. How are you? Long time no see. I got the Ditmar 581. The engraving on the frame says "MAXIM Type 581A". There is no notation "maximette" on the tank. There is only a remnant of the seal on the tank. I will repair this as much as possible.
@Tony Press Thank you, Tony. I will do my best. There is a date on the bottom of the tank. It seems that it was made in 1949.