Looking for info about C. Plath compass


I’m looking for info about a large C. Plath compass I have to sell. I have no idea of it’s value and I have not been able to find anything about it.
It’s in great condition, I think that it has never been installed. The liquid inside looks to be a bit low but I guess it is to be expected as it looks to be about 20 years old, but the fact is that I don’t know anything about it.

The label says.
Gerät: 2013
Werknr: 11453
Made in Western Germany

Have tried emailing the comapany for any information?


Not exactly the same as your picture but a Cassel’s and Plath compass can be found on eBay (albeit from India) for $350-400. This one linked is the same we have in the binnacle on my ship.

I did not. I browsed the web site but found nothing useful.
I will do that, thank you.