Classic Pinball Machines How Do I Find Out How Much My Classic Pinball Machine Is Worth?

How do I find out how much my classic pinball machine is worth? - classic pinball machines

I have written a vintage 1973 Gottlieb Pinball high hand with a little about them, but it is in good condition and has all its original parts, including glass. There are people who may be interested in buying? If so, how can I determine its value?