The decals are identical to my 1973, although mine is an F-70 French equipped PX-10 equivalent, while yours is the all-Campy model which I believe was called the Champion du Monde. Note the bike is all red, no panels, plain white block letters with no border. Only a year or two earlier, red top end LeJeunes had blue panels and blue borders on the white letters. So I'm guessing 1973 or maybe a year or two later. Could be 1972, but I think no earlier than that. A nice bike in what looks to be very nice original condition.
> From: Jerry Tenenberg <email@example.com>
\r?\n> Subject: Re: [CR] Lejeune
\r?\n> To: "LTravers" <firstname.lastname@example.org>, Classicrendezvous@bikelist.org
\r?\n> Date: Sunday, December 20, 2009, 11:17 PM
\r?\n> Hi Lynn,
\r?\n> Here is where I posted the photos of the Lejeune:
\r?\n> So far I have been told a 72 or 73, what say you?
\r?\n> Thank you.
\r?\n> Jerry Tenenberg
\r?\n> Encinitas, Cal