TimmyT: Apparently I can't send private messages yet, so if you're willing to send me that bracket, please send me your email I guess.
I double checked the serial number, it really is N1E0215. No site seems to be able to interpret it. I guess that "1" could suggest the bike was made in '81, but the other online information says Raleigh didn't make bikes in Japan until '83...

I'm not the only one with that kind of serial number: https://answers.yahoo.com/question/i...erial%20number

DD: I was happy to find you are correct, the divot does not appear to effect the bearings at all. Unfortunately there are some cracks at the damaged area, so I think I should still replace it. The situation isn't quite so desperate though, I can get rolling for now. Thanks!

JohnDThompson: The only other bracket I have around is on a Bianchi Mixte from the early 80s. I'm pretty sure it was also Japanese made. If it fits in I suppose that would verify it's all in English measurements? All the parts on both bikes are SunTour.