Looks like a watch with 24 date windows, no? Well, look again.
Let’s not beat around the bush: the Gruen Airflight has twelve see-through apertures in the dial. At 1 pm a thin under-the-dial plate shifts automatically to expose the numerals 13 through 24. How cool?! More here. Thanks to Andrew.
I like mechanical watches that include one smart feature. It kind of makes that feature feel more significant.