When a pendulum clock is running properly, you should hear a rhythmic and even "TICK-TOCK." If you're hearing "tick-TOCK, tick-TOCK," your clock is not going to be running for long.

I have appraised all types of clocks – tall case clocks, carriage clocks, mantle clocks, etc., for clients in all parts of the world. These clock collectors have been surprised or even stunned ...