Here's a different version of the L. Worz Ulm a.d. distributor mark:
JAN
Jan,
This could be the company "Ludwig W�rz" in the German city of Ulm. The abbreviation "a.D." behind the city name "Ulm" means "an der Donau" (= at the Danube river).
W�rz was a custom tailor, which made regimentals, headgear, etc. Most likely he was also offering bayonets, which W�rz stamped with his name and location.
Here�s a photo of his label in a tunic, which is for sale at Weitze (photo courtesy & copyright of Helmut Weitze).
https://www.weitze.net/detail/53/Wehrmac...pe__143153.html