It's obviously Schwinn, but it is an older repaint so I can't be sure of the correctness of parts. Wrong seat :x I was told it is a 41, but I'm not sure. The top headset cup is a cup that threads down onto the bearing and race. I remember seeing this on some 70's schwinns, but not on my other 30's-50's Schwinns, so I'm stumped. Hopefully the fork and guard or correct. I'll pull the crank and be sure soon, but it could have been replaced so who knows. Any help is appreciated. In the how-to thread someone mentioned the guard being one-year-only. Not sure if that helps with the date. I can post the serial but I guess it wouldn't help since it's pre-48. If specific photos could help let me know.