I don't know what the value of your big bolt is,but the interest in those is alive,and very well,and being a C.O.E.is a real plus.If you are doing it to make money,well that is a different,story,but it sounds like it might be for your own satisfaction,and if I were there to see it,I would be pleased.Many don't own big bolts,or farm tractors because they live in town, but there are a lot of country folk.