I just replaced a bunch of door knobs in the house...which I think were original from 1948. Someone told me these may be worth some money and I should try to sell them when I replace them....but I don't know that anyone would even want them. Does anyone think it would be worth it to post them on ebay or craigslist or something like that to try and get a few bucks for them? They are in working condition and have no physical damage/scratches/etc, just tarnished a bit as expected. Thanks!