I found an old Seth Thomas clock in my attic. It is in pretty good shape with a few scratches and dents. It does not work by itself but if I were to move the minute hand to 12 it starts to make sounds like dong...dong...dong... and if I move the hand to 6 it makes a high pitched Ding...
It has a lion with a ring in its mouth on both sides.
On the back it says:
Made in US
Patented September 7, 1880
I have the key for it to control the internal gears which work when I move the minute hand. It has the original pendulum but it does not move by itself.
If you know anything about clocks please tell me an estimated value and (if it is easy to do) how to make it work on its own.
Best answer gets 10 points!