Breguet Marine Équation Marchante 5887

About this reference

The Breguet Marine Équation Marchante 5887PT/Y2/9WV was introduced in 2017 and remains in current production. This reference is technically significant for its caliber 581DPE, which features a running equation of time indicated by a second minute hand with a gilded sun tip, a perpetual calendar, and a 60-second tourbillon with a silicon carriage. The 43.9mm platinum case houses a blue gold dial decorated with a wave-pattern engine-turned guilloché. Collectors value the movement’s 80-hour power reserve and the peripheral rotor design that allows an unobstructed view of the finishing and the equation cam on a sapphire disk. On the secondary market, this reference typically trades in the $140,000 to $175,000 range. A notable production detail is the hand-engraved depiction of the Royal Louis, a ship of the French Royal Navy, across the movement bridges, referencing Abraham-Louis Breguet’s 1815 appointment as Horologer de la Marine Royale.