When talking about exceptional watch design you have to take a look at this rather weird Pierre DeRoche TNT Royal Retro Skull
A skeleton watch is a (mechanical) watch in which most of the structure of the watch and the moving parts are visible through the front of the watch, the back or sometimes even smalls cuts outlining the dial.
.
Just like a human skeleton it’s is the “bone structure” of the watch that becomes visible when a watch is skeletonized. Or open-worked.
.
Skeleton watches
The Audemars Piguet Royal Oak Tourbillon Extra-Thin Openworked Yellow Gold makes this model even more notable
The Armin Strom Tourbillon Skeleton is spectacular to see and unique in its kind and celebrates the highlight of the ultimate watch complication