UBB.threads Forums Edged Weapons Hunting, Forestry, and Shooting Forum Anton Wingen Jr. "Deutscher Brummer" "42er"

I would guess that the J. H. Becker, Solingen and the Gebr. Muller, Stuttgart, "Deutscher Brummer", "42er" knives were made on contract by Anton Wingen Jr., Solingen.

And maybe there were other companies that were distributors.