Thanks Jeff, ties in with what I've seen of Chronomatics - predominantly Autavias and Monacos, with relatively fewer Carreras. Other than Arno's, I was only aware of one other Chronomatic Carrera, that had been sold in Japan.

And I always wondered why that was. After all, the first Carrera had done very well for Heuer, so you might expect it to be very well represented amongst the Chronomatics we know today. But it really isn't. I wonder, with a fairly restricted supply of Calibre 11 movements whilst fabrication was ramping up, if Heuer didn't prefer to put most of the movements they could get into the two more expensive watches? Whilst still selling Carrera 12s and 30s from the first generation. Of course, Autavia 12s and 30s were still available too, so not a complete explanation but it could be part of the reason behind the relative scarcity of Chronomatic Carreras.