Originally Posted by
unworthy1
^true, except that in '75 the Grand Record was "ALL tubing 531", not just 3 tubes (at least the decal says that).
That's correct. By mid-decade, the Grand Record was 531 all tubes, the Grand Jubile was 531 three tubes, the Grand Touring was Vitus 181 three tubes. From what I've seen of earlier Motobecane models, it appears that the mid-range models were upgraded throughout the 70s (e.g., the Grand Touring was upgraded from 1020 to Vitus, and apparently, the Grand Record was upgraded from 531 three tubes to 531 all tubes, etc.).