I would say "Hello Mr. Dato 12" and ask if it was doing well :)

It's an interesting one and perhaps less clearcut on Dato 12s, as Jeff suggests above. But let's look at this particular watch. We see the fluted pushers, which on an Autavia or Camaro would indicate a later watch. But we also see the plain steel hands, which say earlier rather than later. So perhaps we have something of an anachronism going on. Do you have the first two digits of the serial?