No answer, what a pitty.
I have a Pfaff 335 with Erz. Nr. (which, as I understand, is an abbrevation for "Erzeugnis Nummer = product number) "901-0335-044/001".
I do not know if this is a H2, H3 or H4 machine or has classification B/C M N.
The problem is how to translate these Erz. Nr. to the usual subclass numbers (as -17/03 or -40/03) or B/C-classification.
I could buy a used Pfaff 1245 with Erz. Nr. 901-0335-044/01, but I stay away buying this machine because I do not know if it has the classification CPMN etc.
So there are these Pfaff machines - mostly those cream-colored ones with brown front plate - where Pfaff did not imprint the usual B/C M N etc, but only the Erz. Nr.
This is utterly frustrating!