Solved: Wendax 1278 - Opel (?) Cabriolet by Schlesienwerk

[Wendax]

I'm not absolutely sure about the base car, but I do know the coachbuilder.

For one point, please respond and identify (at least) the coachbuilder of this car.

[Wendax]

up

[AlexFrance]

Is it French?

[Wendax]

No

[oko94]

Sodomka ?

[Wendax]

No

[Wendax]

up again

[4popoid]

German coachbuilder?

[Wendax]

Yes

[4popoid]

Karosseriefirma Gläser of Dresden?

[Wendax]

No, less known

[targhediferro]

Perhaps a Brennabor?...Just to help to find the coachbuilder.

[Wendax]

As I said in the initial post, I'm not sure about the base car.

[4popoid]

Is the coachbuilder located in Berlin, or one of its suburbs?

[Wendax]

No

[4popoid]

Is the coachbuilder located in territory that was once the DDR?

[Wendax]

No

[4popoid]

Is the coachbuilder located south of an east-west line passing through (and including) Frankfurt?

[Wendax]

Depends on which Frankfurt you think of. 

[4popoid]

Ooops, sorry, I was thinking of Frankfurt am Main.

[Wendax]

Not south of that Frankfurt

[4popoid]

OK, we have now established that the German coachbuilder is not located in:

1. Berlin or its suburbs
2. The former DDR
3. Frankfurt am Main
4. South of Frankfurt am Main

So is the coach builder located west of a north-south line running through Frankfurt am Main?

[Wendax]

No

[4popoid]

Well, that's a surprise, most of my possibilities were northwest of Frankfurt am Main.  Now that we have established that the coachbuilder is/was located northeast of Frankfurt am Main, presumably south of Frankfurt an der Oder, and not in either Berlin or the former territory of the DDR, the possibilities have been greatly reduced.  Based on this isolation, is the coachbuilder of the puzzle car Hermann Harmening of Bückeburg?

[Wendax]

No