NT, a lot of the 9x12 camera manufactures offered cheap lenses that they probably bought in branded for them. The cheapest lenses were triplets, the Nagel Ladar may be one, the Nagel-Doppel Anastigmat f/4.5 135mm was probably a just a run of the mill Anastigmatic.

The only really decent 9x12 lenses are sold under the lens manufacturers own name, that does match the camera manufacturer in the case of Zeiss, and the Tessar, Voightlander and the Heliar, Goerz and the Dagor, Rodenstock and the Eurynar, there may be others.

Ian