Received my vise from Cripe today. As d4dawg said, it's the early round back model which is what I wanted. I already have the square back model and wanted the round back just to have both, though the square back looks a little beefier to me. This vise came in excellent condition and as usual, was covered in grease, so I spent about an hour cleaning and dismantling to remove the metal filings from inside, though mine hardly had any! The jaw alignment is perfect! No complaints at all, and it will be very convenient to now have vises in two different locations of my garage!
Edit:
One thing I noticed today is that the front below the handle is also round vs. square. I never noticed that before in photos, as everyone has always focused on the round vs. square rear area of the two models.
