It's a Van Norman Cylinder boring machine. We tested it last night on a core Blaster cylinder I had in the back. It works perfect and cuts dead straight. It has an air over hydraulic feed system, two speed spindle, and a variable rate feed.
This machine is in like new condition and has very little use on it so it should out live me. The black marks on the table are from spray adhesive. Someone must have thought it was a fancy work bench. The shop I bought it from didn't have any idea how, or if, it worked.