I'm going to guesstimate the Nishiki at 57cm. Roughly 5'7" and up.
The Sprint is smaller, maybe 52-54cm ctt. So shorter than 5'7", generally.
The Centurion is way taller than I'd even try to ride. I'm guessing at least 25".

But there's always exceptions, you know.

How tall thereabouts are you?