Solved: PN #966 -- Eigenbau Sportwagen based on a Röhr Junior by Kurt Delfosse, 1937

[pnegyesi]

You need to a find race who became more known after the 2nd WW and who appeared on AP before. His family has been mentioned in the Röhr history.

[oko94]

Still locked ?

[pnegyesi]

no

[oko94]

Was the owner/racer German ?

[pnegyesi]

yes

[oko94]

Has this racer raced with Eigenbaus after WWII too ?

[oko94]

*bump*

[pnegyesi]

oops, sorry. Yes, it seems he did

[Wendax]

Petermax Müller?

[pnegyesi]

no

[oko94]

Has this racer raced with a BMW-based Eigenbau ?

[pnegyesi]

sometimes - in the pre-war era. In fact he brought the puzzle car to a race, but instead he raced a BMW special there ! In the post-war era he raced with other sports cars

[grobmotorix]

Thank you Robbie / ropat53 for the hint!

This looks like what I wanted to post as a new puzzle.

According to a photo I made just the last weekend in the nice and interesting Museum of Ober-Ramstadt,
this is a Röhr Junior race car built by (Kurt?) Delfosse.

[pnegyesi]

That's it! What a nice photo! You see if you know where to look even the most difficult puzzle can be easy !

[grobmotorix]

The text underneith the photo in the museum told that this car has been built by using only spare parts:

[Wendax]

The Gesellschaft für die Verwertung von Industrieanlagen bought the Röhr factory in November, 1935, following the Röhr bancruptcy. But the sale was annulled in May, 1936, by a Darmstadt court.

[grobmotorix]

Ah, ok, thank you.

[Wendax]

Another picture: