Rolex Two-Tone Datejust Turn-O-Graph "Thunderbird" - 1986 Strap It strikes us as somewhat

It strikes us as somewhat ironic that while Heuer is perhaps best known for introducing the Calibre 11 (through Project 99) automatic chronograph movement and inserting it in some of the most iconic 1970s timepieces ever produced

first commercially available Helium Release Valve (on the Conquistador models)

horologically speaking

Angelus is one of the old Swiss chronograph masters that couldn’t survive the Quartz Crisis

vying with each other for the best position

Rolex Two-Tone Datejust Turn-O-Graph "Thunderbird" - 1986 Strap It strikes us as somewhatThe Turn O Graph is perhaps the most unusual and misunderstood of the Oyster Perpetual line, and most certainly one of the coolest! The line dates to approximately 1955, when the designers at Rolex paired a Datejust case with a rotating bezel more commonly found on sports models. The result was the Turn O Graph, later nicknamed the "Thunderbird" after being selected by the US Air Force's Thunderbird aerobatics team for its pilots. Although the model