[CR]when did campy "mexico" crank come out?

Example: Books:Ron Kitching

From: Bikerdaver@aol.com
Date: Sun, 29 Feb 2004 23:17:26 EST
To: classicrendezvous@bikelist.org
Subject: [CR]when did campy "mexico" crank come out?

I was wondering when Campy's "mexico" crank came out? Does it show up in any catalog? I have seen team mechanic attempts at the cut-out spider arms going back to undated cranks, but as far as factory made ones, I have no idea. Anybody have the skinny? cheers- Dave Anderson Cut Bank--I can smell spring in the air--MT