Dang, too late. I just hauled a bunch of scrap away, including 2 or 3 used sets of 455 valves, some of which were Stage 1's. I never considered somebody would maybe be looking for a single one.
I took apart an engine that had been sitting for 25 years and that is all I can find wrong with it. It has a very small spot that won't polish out. All the other valves lapped in just fine.