Puma 6310 Sportmesser (sporting knife) from around 1940.
Although the model number is in the 1940 Puma catalogue, it shows only the 4.5 " bladed version, not this 6" bladed one.
Gave it a new edge, coated the leather washer handle with a few coats of Granger's beeswax, and polished the pommel a bit.
The chances of finding an original sheath for it however are probably slim,













Specs:
Overall length: 10.12 inch (25,7 cm)
Blade length: 5.98 inch (15,2 cm)
Max. blade thickness: 4,51 mm (ricasso)
Steel: hot drop-forged carbon steel
Handle material: leather and brass washers + guard & aluminum pommel
Sadly without a sheath.