[CR]531 vs 753

(Example: Framebuilders:Pino Morroni)

Date: Mon, 24 Mar 2008 06:19:59 +1100 (EST)
From: "Brent shorter" <brentshorter@xtra.co.nz>
To: classicrendezvous@bikelist.org
Subject: [CR]531 vs 753

Hi all,

How do i establish whether my late 70's Ti is made from 531 o r 753?? serial number is SB1323. Seat tube appears to be slightly under 27m m as my 27mm post is very tight to fit... does this help in identifying?? t here are no decals on the frame.

thanks in advance.

Brent