I don’t understand what you mean by pack shots.

Black dials are photographed the same way. The only thing to be careful of is placement of the flash, and ensuring that it is not caught in the photograph as a hot spot. If the dial is black and curved with a curved crystal, like many Mosers, this presents a more significant challenge, and the standard way to deal with this is by keeping the watch and camera still, but moving the flash heads to different locations. Each location will have its own hot spot, and the final image is a composite with no hot spots.

Thanks for your comment. But it was the intention and artistic call not to clean the watch, as this is not a commercial shoot. But to show the watch, as loved. I also intentionally did not adjust time to 10:10:35.