Satellite images of a town/area will hold clues. I have found 1930's coins from 'the hill' but found 'recent coins' from the sidewalk area. BTW, if you still have dirt roads, check the left side of the street. Back in the day, the postal service would deliver mail (for coin in box) to that side, mercs abound. If anyone is in the Reading, PA area and gets permission to dig let me know. I have a Bounty Hunter SS2 for silvers and an original 'screaming' Garrett Deepseeker (that speaker is too loud) that I would like to swing