First thing that comes to my mind after browsing through the results on a well-known-website-with-racing-statistics is that the picture at Nuerburgring among the other cars ('Gloeckler.jpg') might have been taken during 1954 Rheinland Pfalz Preis. I'm thinking of 1954, because sixth in that sequence of cars you can see a very distinctive EMW sportscar of 1954 with most probably Arthur Rosenhammer driving, fifth would be Paul Thiel in a 1953 EMW following a Lotus Mark VIII of Colin Chapman himself, Erwin Bauer or Dan Margulies (?), third is a Gloeckler of course, first is a 1954 Borgward of Hans-Hugo Hartmann, I suppose. There, in the back, running eighth, I guess, I can see Hans Fischhaber's Lancia Eigenbau, which was also entered for that race.
In the list I have I can see four Porsche based cars with no numbers identified (as there is no car 34 among those whose numbers are known):
Otto Mathe (but I suppose he should have raced his Fetzenflieger? EDIT: or a 356 Coupe)
Helmut Niedermayr (he raced Rometsch Porsche, I believe, which was found more or less complete many many years later, which does not let me suppose it could be a Rometsch rebuilt after some accident, but who knows...)
Bernhard Cappenberg (allow me to make a supposition he's the car #42 on the picture)
Huber (Alfred (Albert?) Huber from Nuernberg who drove a 1.5 Porsche in 1954 or Austrian Friedrich Huber who was noted in a BMW that year?)
