Hi Irondragon,
Greeting from Australia. Many thanks for your post about the "bear" stamp" .
I am waiting on the Museum Of Timkeeping inthe UK to give me their opinion of the clock and its age/origin.
Since my last post I found the same stamp on the pendulum rod (the rod is 2.6 metres long) so I know it is original to the clock.
The movement in the pictures is I have of the original clock but I have repaired it and it works.
That is interesting about the origin being Swiss. I will keep researching.
Here is a link to a YouTube video in case you are interested in seeing it running.
https://www.youtube.com/watch?v=K7s8YYRB-AY
If I find any more information on the stamp I will post it.
Many thanjs!
PS: Sorry it took so long to reply to your post.