Let me start by saying I'm new to the Oliver crowd. I have a two John Deere two-cylinder tractors of my grandpa's, one of which is in the restoration process and the other original and running. Anyway, my fiance grew up in Pennsylvania (we live in Michigan where I grew up) and her family had an Oliver dealership years ago in Lamartine, PA. So naturally with my love of old tractors, I took an interest in Oliver tractors. I'd love to have a tractor for her to remind her of home and I found out they used to have a 660 on the farm. I really think the 660 is a sharp looking tractor and is sized right to offer some utility around the farm still, even if it's just pulling a wagon. This summer there were 2 gas, narrow front 660's that sold for about $3,800 each at a sale, and there is a sale in a couple weeks here in Michigan with another that has the same options. I guess I'm wondering about a ballpark value for an original running 660, and how rare that model may be. I don't see many around and I would think seeing this many sold isn't common. I'd hate to pass up an opportunity to own one. I hope some of the experts here can offer some help. Thanks in advance.