German Hallmarks IWC-watch 1908

[ulf548]

Hello!
I inheritated an old IWC pocket clock, build in 1908.

The silver hull is a german product.
Here is the inner side of the backlid:
Signs at the inner side of the clockwerk-lid:


I hope, you can give me some information about the hallmarks.
Maybe it is a variation of the sign of "Karl Kaltenbach & Söhne" ?
Thank you in forward!

[oel]

Hi welcome to the forum, Swiss made watch case for export to Germany.
For the Grouse see Switserland:
https://www.925-1000.com/foreign_marks7.html
For more information see:
https://www.vintagewatchstraps.com/swisshallmarks.php
And:
https://antiqwatch.com/old-watches/swis ... rking.html

Peter.

[AG2012]

Those are Swiss grouse marks, as explained by Peter.
For the grouse mark of "Karl Kaltenbach & Söhne" see here:
https://www.925-1000.com/Fgerman_marks_a1884_4.html
Regards

[ulf548]

Many thanks to everybody, answering fast and precisely.
Especially to oel and AG 2012 and Peter