There are 2 different designs.
1 Gablonzer design
2 Gablonzer design
Yours is definitely the 1 Gablonzer design.
In these manufacturers it is very difficult to find a manufacturer out. Because they all use the same design.
But, I think that it is your piece to the manufacturer 92 (Josef Rücker & Sohn / Gablonz) is.
But be very sure you do not own.
I hope I could help you and you gain a little insight.
Thank you for the information !!