The Noct you got is the Ais - The old Ai has a lot more focus throw, it has about 230 deg since the mechanics are totally different, longer helicoils a bit stronger old fashion design stronger,,,
I agree with Sten, the other 50, 55 and 58mm Ai and Ais lenses doesn't come close to the Noct-Nikkor - The New 58mm 1.4 G does,,,