Signature 1, Piece Unique, Steel Octa Automatique Réserve the first-ever pure split seconds

the first-ever pure split seconds from the manufacture

It features a deep blue three-layer luminous dial with a frosted centre

It is a massively capable dive watch building during an era when Rolex still treated its sport references as tools first

Its dial features the characteristic wide O of Omega and fantastically tan

It remains today one of the lightest full-bracelet titanium case wristwatches ever made

Signature 1, Piece Unique, Steel Octa Automatique Réserve the first-ever pure split secondsA Signature 1, Greubel Forsey's first time only wristwatch in steel, here in a unique configuration of steel case, black gold dial, frosted black mainplate, and blued screws. The brief for the Signature 1 was to create 'the essentials, executed flawlessly'. Didier J. G. Cretin, a long time senior watchmaker of the Greubel Forsey team, took six years to develop this calibre with its own unique oversized balance, floating petite seconds, winding bridge