Here's one of the most sought-after chronos ever: The 1960s-70s Wittnauer 242T with the rarest dial.
Jet black. Amazing lume pattern. And here's the difference with most: There's no "Geneve" under Wittnauer logo. Hence, "solo."
The solid stainless steel case is a hefty 39mm across, excluding the crown, by 46mm from lug to lug.
Under the hood, the Valjoux 72 manual movement. What else?
Keeps excellent time.