[stephen f. polyak]

A minor point perhaps, but I suggest that the fabricator code may be: jau.

If so, it's a part made by Neue Kuhler- u.Flugzeugteile-Fabriken

Such a simple part is within the capability of a small firm, being a more appropriate source (in this case serving Messerschmitt) than a major aircraft producer (i.e., Heinkel) concerned with its own products and associated part sourcing.

I will inspect 109 plates in my collection to determne if either jau or fau appear.