0426 =
Wed. Feb. 11, 1976, making it a very early '76 model as the first day of production that year was Jan. 19th.
Please post a pic of the Nervar crank arms on the bike, I'm trying to determine when those changed from the 1st to the 2nd style. So far all I know is that it was very early in '76.
These are the 1st style arms (also used on the '71-'75 Sports Tourer):
These are the 2nd style arms:
If anybody reading this has a '76 Superior with the 1st style Nervar crank arms, please let me know the frame and badge numbers. Thanks!