Squeak, I sold for two years on ebay old beat up glass insulators from old light poles here on the desert of Western Colorado and Eastern Utah. There were numbers etc on them. None were worth a fortune but were all different prices. Just get on ebay and search like "TV tubes model # or color description . You'll be an expert in an hour or less, maybe ha ha. I'm positive that will be the best bet. If you sell to a dealer you won't get a much for them as you would if you get to find a collector on ebay. Type TV tube collector on Google too.