Lachau that’s a bit pessimistic especially since the op has already bought it, how about a bit of advice to help the guy in the future. IMO there’s a 100 other things to factor into before writing off an old machine, what’s the intended use?, what condition is it in? What’s the service history like? Does everything work? What was it used for? Just to name a few. Like the op I too like old machines as I find them easy to service and repair and parts (if you can get them) are generally cheaper than the equivalent new model. That machine looks very straight, chains don’t look stretched, counterweight has barely been scratched and the taillights aren’t even smashed! I would work it and test every function, if anything seems amiss raise it on here or go to exactec.org and search their database. Give it the once over and change all oils and filters. Get a high pressure cleaner on to it and clean it up, grease it and away you go. personally I like the design of those old Kobelcos with the squarer looking cab, like the old late 80’s early 90’s Komatsus, they look cool. Btw how many hours on it?