No mistaking that for anything other than a Carlton. The Cobra arrived 1973 I think and would have the standard "W" prefix number, and the Crespera lugs. I'll have a think
Pound to a penny it begins with a "C" or a "K"
Spokesmann would be more help than me here, He probably has one
Sadly don't have this one.
Certainly the lugs don't say Cobra, Crespera as said were the Cobra lugs. Is there any sort of frame number? The wrap over stays in that form say late 60s into the mid 70s. Could well be a Course de Primes. Looks nice whatever it is. As said Carlton loved their chrome and nothing looks classier when properly looked after.