1965 Valiant Signet convertible - 273 Commando

Welcome. Certainly an extremely rare car. For 1966 (I don't have a book that covers the '65s) there were 446 Valiant 200/Signets with the Commando motor. That was all body styles out of nearly 50,000 cars. That works out to less than 1%. If the same percentage were applied to just the convertibles you'd have around 25 cars. I think it would be safe to say that there were no more than 50...