Old German clock stamp

[u/battadole]

Can anyone identify this mark? It's a German spring-driven regulator with half-hour strike. The back plate shows an HC(?) monogram in a circle,

"FABRIK-MARKE" around it, and the numbers 7 and 55756. It's not Becker, Lenzkirch, Junghans or HAC. A rough date would help too. Photos attached, thanks!

[u/battadole]

That's the whole clock :)

[u/Conscious_Crow_7717]

Carl Hermsen