That is why we scrape off the dust when restoring them. If they aren't worthwhile some people might take them to the scrappers
Somehow they just don't seem to be making any new radios from the 30's, 40's and 50's. LOL. bill
p.s. If you have been out of radio for 15 years, you need to understand that the internet has replaced trading that used to be listed in 'yellow sheets' and in magazines. Likewise it has drawn off much of the tailgaiting and hamfest offerings.
Take a look at Ebay, QTH.com, and QRZ.com, not to mention good old Eham.net. One advantage is access to radios one might never have seen except in old magazines and catalogs.
Buying sight unseen has more risks. Don't pay more than you are willing to lose, if the radio turns out to be a basket case.