In October of 1976, when I got my replacement Masi, as part of the initial assembly, I substituted the Cinelli #2 for a Sella Italia Criterium Superleggera, a 280 gr, padded saddle covered in "buffalo" and having alloy rails, mine weighed in at 240gr.
Much preferred over rough terrain, either the shell or the frame gave quite a bit, it did have a tag in Italian that from which I concluded it was for riders on the lighter side.
Never seen one since, too bad.
John Jorgensen
Palso Verdes Ca USA