[CR] Help dating a few frames. Colnago Super and Rossin Pista

(Example: History)

Date: Tue, 21 Jul 2009 11:40:51 -0700
From: "John Cerasulo" <cerasulo@yahoo.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR] Help dating a few frames. Colnago Super and Rossin Pista

Hello all, I'd love for some Colnago experts to step forward and lend a hand in dating a Super I just picked up.  My guess is that it's from 1979 or so but would love for some of you to look at it and tell me what you think.  While we're on this topic of restoration, I also have a mysterious 198? Rossin Pista frame that I'd love to both date and assure myself of its authenticity.  The Rossin has been VERY tastefully restored in a sort of Saronni red with chrome rear and fork.  There isn't a number to be found on the frame and it's quite heavy for supposed Columbus SL (I think) tubing.  I would greatly appreciate if anyone can take the time to assist.  It's dreary here in NYC and I have taken a day off from my studio practice as a young (ish) NY artist so I've had time to take proper pictures.  Please excuse the hasty build on the Colnago, it is incorrect and will be properly built in due time.

The Colnago can be found in my flickr page here: http://www.flickr.com/photos/92687323@N00/sets/72157621764142744/ And the Rossin Pista here: http://www.flickr.com/photos/92687323@N00/sets/72157621639607203/

Looking forward to hearing from you!  Hope the weather is nice elsewhere.
John Cerasulo
Brooklyn, NY