Taken from Barret Jackson website:
"As history shows, CSX 3015 is one of two Super Snake Cobras built. The other being CSX 3303 built for Bill Cosby. CSX 3303 was a 1967 427 street car retained by Shelby American as a PR car and then made into a Super Snake for Bill Cosby. Cosby's record album titled '200 MPH' attests to the fact of why he only drove it once before returning it to Shelby American. Shelby American sold it to S and C Motors in San Francisco, who then sold it to their customer, Tony Maxey. Maxey destroyed himself and CSX 3303 by driving off of a cliff and into the Pacific Ocean."
That means in a nutshell that the car that was just sold a few minutes ago is a "one of one"