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Certified Pre-owned

Story of this machine

MoonMachine is what we call at MB&F a ‘Performance Art’ piece: one of those special occasions when we ask an external artist or designer to reinterpret one of our existing Machines. In this case, the Machine is the legendary HM3 Frog – reinterpreted by the talented Finnish watchmaker Stepan Sarpaneva.

To create MoonMachine, Stepan reconfigured the HM3 Frog by turning it 90° and adding his signature design elements: most importantly, his unmistakable moon-face/moon-phase indicator. He also transformed the dial-side winding rotor into a scintillating firmament of laser-pierced stars, forming constellations visible in the northern sky.

As always with Performance Art pieces, MoonMachine is an absolutely hybrid timepiece, combining two worlds: it is instantly recognisable as an MB&F, but also 100% Sarpaneva. Two independent watchmakers in a single piece!

This titanium edition with light blue sky was limited to only 18 pieces.


  • Movement: Automatic winding
  • Material: Grade 5 titanium with white gold moon faces on light blue sky
  • Limited Edition: n° 14/18
  • Crafted: 2014
  • Condition: Mint with a new black strap
  • Service: Refurbished case and buckle, movement serviced
  • Warranty: 2 years
  • Box and papers: Included
  • Price without tax: CHF 62'000 (VAT not included)
To purchase or for more info

the machine

Grade 5 titanium case with white gold moon faces and light blue sky
Dimensions: 47 x 50 x 19mm

Three-dimensional horological engine designed by Jean-Marc Wiederrecht/Agenhor; powered by a Sowind base, modified by Stepan Sarpaneva
DLC coated and star-pieced steel and 22k gold automatic winding rotor
Hour and minutes information transmitted via ceramic ball bearings to rotating domes.
319 components / 36 jewels

Hour on one dome (aluminium dome rotating in 12 hours)
Minutes on second dome (aluminium dome rotating in 60 minutes)
Moon phase displayed by dual moons rotating under a Korona ring, adjustable with a corrector.

More information about the original piece download manual




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