My mom wants to sell a grandfather clock that we have had for about 40 years. She bought it in the late 70s from an old man so it has some age to it. How on earth do I go about figuring out if its a $50 or $500 or $5000 clock? Does anyone know where I should begin?

 

Other than here https://nawcc.org/
there is always google.

 

If there is a reputable antiques dealer near you, ask if they know an appraiser.