Hello Mikee, thank you for looking and thinking about the buckle. What I have learned about members of Werkschutz is that although they mostly did wear a kind of standarized uniform (especially concerning the arm patch and the emblem on the paked cap) - which is the case here-, the buckle often had a direct connection to the works they did protect. If I remeber correct eg Volkswagen did have the VW emblem in their buckle or Heinkel the wheel with the wing.
So this special buckle should have a connex to one of the larger german works (I think small works did not have the money to let manufacture thier own buckles) but I never have seen tis emblem up to now.
Regards,

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.