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Old MacDonald had a farm and shut its doors around 1955. Now the guys are singing e-i-e-i-o as they find historic items in the abandoned barn, house and mill in Westminster, Md. Jay's biggest finds include a bell and a collection of tiles that may be worth $140 each, but Mark is the one making hay when he finds an early radiator oven. The property's owner is on the fence about selling the items until he makes a surprising offer of his own.