Yes indeed, very nice. Looks to be perhaps a '74 or '75. The rear derailleur should have a patent date on it. The GR was right below the Le Champion in Motobecane's production lineup. Full 531 frame and fork. Fine bike.
Found a 76 on the bottom of the Nuovo.
This bike is turning out to be a real easy clean, just gotta get the BB serviced and the wheels trued and she'll be ready to ride.