Like the 180 Nikkor I just listed, if this lens isn't flawless I can't find the flaw.
This is one of my very favorite lenses on 11X14. It has surprising room for movements and no corner loss that I've ever seen.
In one of the opening pages at the LF site that hosts this forum you can find where one of these lenses has resolved 67 LPPM. That kind of resolution is in the awesome category, especially for a lens with this kind of coverage.
Also as close as cake and eating it too ever gets. This monster coverage is in a Copal 1 shutter and relatively light. $685 + shipping