MB&F Horological Machine No. 3

About this reference

The MB&F Horological Machine No. 3 (HM3) reference 31R0032, known as the "Sidewinder," was produced between 2009 and approximately 2012. This reference features a multi-part case constructed from 18k rose gold and grade 5 titanium, housing the Girard-Perregaux based caliber re-engineered by Jean-Marc Wiederrecht. Collectors value this model for its inverted movement architecture, which places the 22k gold battle-axe winding rotor on the dial side, and its twin conical truncated cones that display hours and minutes laterally. The Sidewinder orientation aligns the cones perpendicular to the arm, distinguishing it from the "Starcruiser" variant. On the secondary market, this reference typically trades in the $55,000 to $75,000 range depending on condition and provenance. While not a limited edition, total HM3 production remained low, and a unique "Chocolate" version of the Sidewinder later appeared as a limited run of 10 pieces.