Ok, so I had some Kodak 400UC negatives with me today in the darkroom, and I figured, why not print them?
So, I printed them up, 28 seconds at three stops down from open on my enlarger (the old lens no longer has any markings, so I don't know what f/stop it is). The image was good, though a bit flat.
The second one, 25 seconds with a #3 filter, and it came out about the same.
I was expecting this to completely fail, but it didn't.
I'll post scans later when the prints dry and I have time.