I found this code back in the mid '80s and have used it on 5 or 6 Duetto resprays. It is a perfect match for the orangy red, not the darker red some early Duettos wore. See if your paint guy can mix up a small amount to compare to the paint under the windshield post covers. That is really the only place that won't be sun faded and it rarely gets repainted.
84 Spider Veloce
18 4C Spider