TAG Heuer Formula 1 Motorsport Since Elinvar (in turn a

Since Elinvar (in turn a contraction for the French elasticité invariable or "elastically invarible") resisted the changes in temperature that would cause hairsprings made of steel to lose elasticity

this watch remains in fantastic condition throughout and comes with recent service papers

it would have been a Seamaster 300

many were indented as tool watches for military and industrial professionals

TAG Heuer Formula 1 Motorsport Since Elinvar (in turn aThere is no doubt that 'tool watches' hold a special place in the hearts of many collectors, ourselves included. In fact, Analog: Shift was founded nearly ten years ago with its eyes set squarely on vintage divers, which then evolved into purpose built tool watches in general. With their simple designs and robust movements, the tool watches of the 1960s and 1970s were built to accompany the adventurer across the globe and to keep time at its great