Well, I shot a couple of smoke tests, and the results ain't bad, at least in terms of the lens's performance. You can't fault it for sharpness, and considering its vintage the contrast seems acceptable; also, the perfectly round apertures are a nice little bonus. The shot of the peppers is quite strongly backlit, and I think the amount of veiling is reasonable considering.
Both of these are negative scans, and I seem to have had the sloppiest day of my life for tray development---the scratches are outrageous, and there are even some fingerprints around the edges, which is pretty hard to achieve when you're wearing gloves! I don't think the lens can be blamed for that part, though.