De Bethune ←
Undoubtedly the most underrated DB, DB26 saw the debut of the now iconic floating lugs. It is still to-date the first floating lug model to sport a perpetual calendar. But the signature element are the hands. Very rarely in the watch industry do we see an entirely new idea for hands take shape. These are actually thin outlines of blued steel around sapphire. The result is a completely legible, but totally transparent hand that allows full view of the perpetual calendar no matter what the time.
In rose gold with titanium lugs, this example is mint and complete with box and papers