According to Evan, there is only one REAL Cobra and he owns it.
I think Bill has the right idea when he says "more than 200, but less than 100,000". However there have been at least 162,374 people that have told me that (insert one of the following; their brother, their neighbour, their father's best friend, etc, etc) had an original in 1965 so there must be a lot more out there than we are aware of.
Wayne