Here is a watch designed by Steven Götz - Watch3 is produced in Switzerland in a limited edition of 100 pieces.
The premise of the design is really clever and follows many of the design principles developed by Edward Tufte. To add readability to the watch the hour numerals are printed on the underside of the sapphire crystal in the same colour as the dial. They are therefore only visible when the broad hour hand passes underneath them, adding the exact information needed at the time it is needed without adding any clutter.
At 8 o'clock you only see an 8; at 3 o'clock only a 3.
It also cleverly uses luminescent paint for the night-time view.