Hello, the "kartoffelkafer" is that just like the model 202/203/204 model from in the beginning of time 1955/1960 ? We know this model only with the name "AFB" of "Bolle neuzen" models. You can find on the site Railfaneurope.net and Diesldsd Odense. But not much photo's to find of the beginning models I know. Best greetings, Eric alias "bollen neus".