This is a Vienna Regulator I guess from around 1890 - 1910. It looks like a double weight version? They were made in Germany and Vienna - hence the name. It could be made by Gustav Becker or copied closely on the lines of Gustav Becker - you might find a "GB" on the bottom of the base plate or an anchor or crossed arrows which would indicate a Gustav Becker clock. I have almost the same and I love my clock.
In terms of value I guess it could be worth $1500-$2000. However, to get an accurate estimate track a similar clock/clocks on EBay (International) and see what they sell for.
Hope this helps
Thank you! by: Ana Resnik
Thank you for all the good information. I think it is not the "real thing" though because I could not find a base plate or any markings...
Best regards!
