A profit is a profit and free cash should never be turned down. Most of the finds I get are actually US 1cent coins that are usually mistaken for being British pennies(if looked at quick enough). Obviously the coin machines know the difference and so reject them, since they are no good over here they just get purposefully left. Well as a coin collecter knowing some of the values of rarer US coinage and mis-strikes/double-strikes, I always get a little flutter in the tummy when I see a few foreign coins in the coin bins.