short people, i need your advice. i've been seeking a 50 - 51cm frame with the only requirement that it's an older bike. i prefer that aesthetic, and i like good-quality steel bikes, and blah blah blah.

but it seems like bikes made in the '70s (that weren't entry level models) usually came in sizes 53-54 and up... do you think it'd be possible to find an '80s frame in my size, or should i not bother?

and is there any particular brand i should be watching for? i notice centurion and some other japanese manufacturers offered smaller frames, so if there are certain names i should be on the lookout for, please enumerate them.