I've just taken two guitars to the guitar hospital. One came from a market stall in Durham and the other from the North London Hospice shop in Barnet.
Both are looking old and tired but with a little TLC they might be rejuvenated. There is a dull bloom on the varnish of both that won't come off with lemon oil, and lots of dings, but I don't mind those. I have rather a lot of those myself, actually.