At the moment, my Camaro reference spreadsheet shows 24 discrete models. Few compared to the Carrera, yes, but that has the potential to up to double once executions and whatever I've missed get added in. The models with the orange Tachy track are probably most dissimilar to other Heuer dials, those could catch out the unwary but then it would be a case of passing on a genuine watch than buying a fake and the ones that get away sometimes even hurt more!

Timothy's shot shows how the registers on that Camaro should be bezelled, i.e. the chapter ring angles downwards and the bulk of the register is sunken, i.e. below the face of the rest of the dial. On the other dial, only the chapter rings appear to be sunken.