You Guys are Correct . . .
it's impossible to trick you guys!!
yes, it's the same Monaco, with photos taken on the same night. the "brushed gray" color was taken with incandescent lights; the black dial was flourescent lights (supposedly color-balanced flourescent lights). And David A. is correct, that the marks on the continuous seconds needle provide a unique "finger-print" for this chrono.
I have just about concluded that it is impossible to get good results with the flourescent lighting, at least with my camera and set-up. We get a dramatic shot, with excellent detail on the hands and markings on the dial, but it was very difficult to capture the color of the dial. so I did some relatively minor corrections with the darkness / saturation / brightness, and the floursecent lighting gives us the mysterious Black Monaco.
I was fairly satisfied with the results of the incandescent lighting, at least for a quick "head shot".
I hope that everyone will enjoy their weekends (and their Heuers)!!
Jeff