JPG wroteI think it is a goldie jointer attached to the swing away bracket.
I totally agree. If you look at the first picture you can the casting just above the near way tube has a hole for one of the mounting tubes. In the fifth picture you can see the bulge in the casting where the other mounting tube goes. You can even see the set screw. That is exactly the way a MK V jointer is. The 4E jointer (the 10ER model) is flat on that side. The other side is virtually the same on both the 4E and the MK V model. So it would be no problem to drill the mounting holes for the 10ER flip up mount in a MK V jointer.
FWIW, I have both here.