Vertex was founded in 1916 by Mr Claude Lyons in Hatton Gardens and the La Chaux De Fonds region of Switzerland. Claude's son joined the company in 1938 and soon thereafter was called up for duty in the war effort. This was how Vertex became connected with the military and ultimately how the Vertex Dirty Dozen watch came about. The Dirty Dozen is a collection of watches from 12 brands that were produced to strict MoD specifications and were built purposely to withstand the rigours of the battlefield - Vertex contributed 15000 of the 150,000 watches produced collectively by the 12 brands.

Watch functions, with grey leather wirst band. Marked on the reverse.

Vertex still offeres an updted version for sale on their web page for 2,150.- British Pounds.

Here an original slightly worn watch form 1944.