Matte, the string follow has nothing to do with the bow unless you are going to shoot it.And then it means nothing.If I was going to offer a price on those bows I would do it like they were non-shootable wall hangers.Which might be the case.I would give a modest,low price and tell them they would probally break if shot.Which could happen,due to drieness of the wood from age.It's happened to me.If those bows are osage that old they should be almost black.Lemonwood will look like osage ,dark orange.Yew will look darkgolden orange.If it's lemonwood and you are going to shoot it you will need to get some moisture or oil back into the wood.If you want to shoot itI wouldn't pay alot.Eddie