Thank you for making your question to JustAnswer. My name is*****'m an Antiques Expert and I will try to help you with your particular inquiry. Please, don't hesitate to contact me any time or to make follow up questions if needed.
You have a 31-Day Calendar Pendulum Movement clock. Some clocks are unsigned, the manufacturer does not put their name on the clock at all, which is what happens in your particular clock. Ussually, the manufacturer name is ***** ***** the dials or spheres. From the style, the clock seems manufacturer by Kassel, however it could be manufacturer by a local clock manufacturer inspired in Kassel designs.
Regarding the value of your item, I have just perform a market research of similar sold items as yours. I performed the research based upon the most recent finished auctions and private sells, so the value given is the real market value of your item. This is the only way to know the exact value of your unit.
The value will be in the range of 200-300$.
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