The 'other' bike used is reported as a 1978 GC serial no MC54 B7814 with a Cinelli fork crown not a Fischer one. It was significantly damaged in recent times and repaired by Gangl cycles with different components and decals. The two Masi bikes had some differences which perhaps explains particular recollections quoted on various sites from those involved with Masi and the film at that time which are not always reflected by what you see in the movie. - ie the assertion that both Masi bikes had blue chainstay decals for example - so I am being a little cautious about taking everything quoted on face value. My information is that both bikes were likely purchased at the same store at the same time (early '78) which I think corresponds with several changes at Masi including workshop location and staff. I am guessing that the bike above may have been unsold 'old stock' item from Carlsbad workhop whilst the other was fresh from the factory in 78.