It's not a NOS Alfa one, it's a repro. So I'm not certain but believe it's as exact as a repro can be. See description of the length. "Alfa" is 63mm between the farthest pins, "Romeo" is 65mm between the farthest pins. Does that help? It's from Jon Noman, he says it's a Duetto script, so I'd think that's right. Most likely came from OKP.