Honda CB750 K3 1973
This '73 CB750 has a great patina to it, if you want a bike to look right for it's age then this one has to be on your list, it runs great, sounds great and looks well in its Olive paint. The bike is showing 37k miles.
Finding an early K model CB750 for under 5k is getting hard these days and this one is an absolute bargain at this price point. You could restore it or just enjoy it as it is, the choice is yours.
The VIN number checks out as a K3 and these earlier bikes are getting harder to find and more valuable.