May be a stocker's initial "S" by the pistolgrip cap.



Is Hubertus stamped on it anywhere? And does a cocking indicator appear when the selector is on Kugel/ball? Also does it have a separate ball extractor? It also sort of favors a F.W. Kessler Model 12. Helfricht & Fischer could have sourced their frame from another maker.

Kind Regards,

Raimey
rse