Originally Posted by thatguy
From the great Sheldon Brown:
"Cannondale Serial number code: first two digits are the size, next 6 are date of manufacture, remainder are unit number. For instance: SN#54021787121 indicates a 54 cm frame, built on February 17, 1987, #121."
(link:
http://www.sheldonbrown.com/vrbn-a-f.html#cannondale)
Yes, I saw that but found that the SN on my frame didn't work with that scheme. That's why I sent Cannondale an email.