Seen one of these on the bay a few days back. Looked in good condition but not as brilliant as yours. Tell me, what size knot?
Wow! That's amazing! Though I think you would probably be better off keeping it unused. All old Ever-Ready brushes I've come across were not that great as actual brushes. The 650PB had an awesome handle and I re-knotted it with TGN finest and it's one of my very favorite brushes today. The original badger hair in it, however was terrible. Well used, unlike yours, but very low quality. Perhaps the unused one is better. Let us know if you do decide to take it for a spin.