Some of the German Singer machines and cabinets were different than most other Singers. I have one from the 1960s that came with a Singer 216G zigzag machine. It’s a semi-industrial or “artisan” treadle with an 18”x36” top and no extension leaf. Mine has a hood to cover the machine, four wheels, and a 12” flywheel. I believe that treadle machines were being made in Germany much later than in the USA or UK.
CD in Oklahoma