Antique Mantel Clock

I dont know anything about this clock except it has been in my family since I was a baby....there is no brand name on the clock anywhere but as you can see there is some wear on the facing of the clock.

My mom was 93 when she passed away over a year ago and this was in her family from when she was little. It has a key as you can see in the one photo to wind it up...it used to work but is not working now..,,,,

I would like to get an idea of its worth in its current condition...