cylinder head question

[bean]

i was given a set of cylinder for an early model 350. I want to make use of them but my question is this: they are 3 holes where the water circulates, one bigger one in the center and 2 smaller on each side of the bigger hole. there is little metal between the big and smaller holes and in one place a small piece of metal at some point broke away due to rust whatever. no the smaller hole and the bigger are essentially one. So.. are these heads going to be worth saving?

hopefully this makes sense