I believe that the decal scheme is time coincident with Greg Lemond's tenure on the Renault - Gitane pro team, n'est pas ?
1980 - 81 ?
Here's a pic of Greg's bike from that period, now on display at Cupertino Bike Shop:
http://www.classicrendezvous.com/
Same decal scheme.
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Mark Petry Bainbridge Island, WA, USA
mark@petry.org 122.31 W 47.19 N
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