From what I'm seeing this looks to be a late 1960's VR series machine. They were the top of the line and often compared the the higher end Hendey's and Hardinge machines. Rather than 2 bearings at the headstock I believe they have 3. One at each end and another in the center. They are excellent machines weighing in at a little over 4,200 lbs.
The have a 5 hp motor, and an infinite speed range from 0 rpm to 2,500 rpm. These machines are unique in that they use a gear motor to change speeds on a Worthington drive. Speeds are changed with the touch of a button rather than physically changing gears The Worthington is similar to a Reeves drive. One of the potential downsides is the gear motors were made specifically for these machines by Merkle-Korft out of Rockford ILL. The motors were discontinued when the machines stopped being built. My WM series machine uses the same drive, and this system is the easiest machine to change speeds I've ever used. The gear motor on my machine is in excellent shape, and I expect it to last for many years to come. Fortunately I was able to find another new one on eBay a couple years ago for an excellent price. Even if the one currently on the machine dies I should be set for life.
Another thing to consider is the electricals are Furnas. They are excellent components, but the company has been bought out several times. Parts for this generation are getting expensive and hard to find. My machine was built in 1960 and the electricals are still working fine. I was informed however when I bought it that some of the contactors are wearing. I did purchase some new units on eBay, but not all styles in the machine were available. The seller (a former Furnas electrical engineer) suggested that if the electricals needed replacement I switch to Allen Bradley. To that end I purchased a NOS Allen Bradley Full Voltage Reversing Controller model 505-BAB-A2F-A2FA for less than $100.00
The machine looks to be well equipped. If it's in decent shape the price is a steal. Attached are a few pictures of the Worthington drive and a brochure from 1966 outlining the machine specifications. Note the pictures of the drive were taken when it was removed to replace the bearings.
