i found an old wheel while metal detecting and i was curious to see what you guys thought as to how old it might be. the wheel looks like it’s iron maybe and has slotted notches on the inside of the it like it was a gear wheel or something. it was made by “great states” corp. and they have been in business since 1893 and they manufacture lawn/ farm equipment. i found another piece similiar to the one i have in question and it said richmond ind. on it but both have s8 on it or something to that nature. the ground it was found in is basically flat. there might be a slight slope but not much of one at all. how long do you think it would take for the earth to cover up something like that in about 5 inches of hard packed dirt? in your opinion how old do you think it might be in accordance to the information i’ve given you? just curious to see what you guys have to say. thanks