Thomas Mercer Brittanica Only Watch 2015

Brittanica Only Watch 2015

About the auction

Participating in Only Watch for the first time, Thomas Mercer has joined the initiative by donating the very first "Brittanica", an all new, exclusive table chronometer made in collaboration with British furniture designer Jake Phipps. A precision timekeeper with chronometer escapement - the spring detent, the hand wound movement incorporates an elaborate fusee and chain system providing 8 days of power reserve. Made of stainless steel with fine leather and extra-white crystals, the case measures 183mm x 150mm x 90mm.

It features a unique dial with celestial map of the constellations, from the point of view of Geneva with the stars aligned for the exact date of the Only Watch 2015 auction - 7 November 2015. The dial’s outer ring is galvanically treated with ruthenium, while the inner constellations map is in bas-relief, with hand-painted blue decorations.

This timepiece will be sold during the Only 2015 charity auction, with all funds raised benefiting research for Duchenne Muscular Dystrophy.

Technical Specifications


  • Hours, Minutes, Seconds, Power Reserve


  • Octagonal
  • Stainless steel
  • Polished
  • 333.00mm x 240.00mm
  • 152.00mm


  • 2015


  • Manual Winding
  • Manufactured