You bought a camera made by a company with a very interesting history. Look up KW - Kamera Werks, and John & Charles Noble, the original company made some innovative cameras in mid - late 30's and also the Patent Etui, the smallest plate camera of any time (the 9x12cm version).

The company made Prakitina's, designed the Prakisix/Pentacon 6, became part of VEB Pentacon, and a factory was later given back to Noble after the fall of the Berlin Wall, and he made the Noblex then went bust and workers or other Directors bought it.

If in good working order an excellent camera, with a Tessar lens.

Ian