T-Mar,
I posted this information back in October 2009 but I'll repost it here to help in your efforts.
The local CL had a post last week where the seller was cleaning out her shed. For the asking price of $10, I was able to pick up a 70's Motobecane mixte in Champagne color with brown stripes, and additional mixte frame and fork stripped of its original paint, a set of 27" steel wheels, a new gum wall tire and a box of mics parts; several kick stands, some reflectors and several bells.
The bike's serial number on the bottom bracket is 7749062 followed by 702. The numbers stamped on the drop outs are 47917.
Cranks are Suntour Tourney with 40 and 52 tooth chain rings. The crank arms have the following numbers stamped on the backs, 76.7 on the left arm and and 76.11 on the right arm. I assume these are date stamps.
The rear derailleur, a Suntour VGT Luxe, is missing, the FD is a Suntour Compe V. The shift levers, which were stem mounted SunTour Power Shifters, are also missing. Rear brake is a Weinmann 750 center pull, front brake is missing. Wheels are Weimann alloys with Normandy high flanged hubs dated 77.
Based on this information and the following pictures, can someone tell me exactly what year and model Moto I have? I believe it's a '77 model year.
Here's the most recent photo taken during it's rebuilding process, though not yet complete: