This was last year, I was at my local farmers market, here in Ft. Myers.... alot of vendors, and customers from my rain barrel business knew about my hobby, so I had what I thought was a brilliant idea...
I displayed my machine and tools, along with my finds, just to strike up conversations... and with everyone I talked to, the question was asked, "what year was your house built?" Any response of 1950's or older came with a permission request, got a half-dozen OK"s... all of which led to other permissions from neighbors... It turned out to be a total score with silvers and other relics... need to do that again.