Trying to get lay of the land (on parts)

[MarkingTime]

I posted by the VK/convention thread, but will duplicate here. While this restorer and enthusiast community seems intriguing, I'm more interested in selling parts or determining value of something I have, but don't need (1950 DuMont RA113-B6 - blonde "Burlingame" model). I knew enuf to grab it from someone's trash last month, but now that I've admired its design and historic value for awhile, I need to pass it on. Any thoughts from reg'lars here on where these materials are bought/sold/traded? And if analog tv broadcast is now defunct, what signals can the old tvs even pick up?!

Respectfully curious,
Mark