Roger Dubuis Hommage 18K Rose Gold Perpetual Calendar Bi Retrograde RARE

More about Hommage 18K Rose Gold Perpetual Calendar Bi Retrograde RARE

This is an 18k rose gold Roger Dubuis Hommage Bi Retrograde Perpetual Calendar Chronograph H43. It includes an alligator leather strap with an 18k rose gold tang buckle and scratch resistant sapphire crystals. It has a signed pull out winding crown, a corrector at 8 o'clock on the left-side case band for the perpetual calendar, and there is a screw down exhibition sapphire display crystal case back that's engraved in high relief with "ROGER DUBUIS – HORLOGER GENEVOIS." The 43mm diameter solid three-body case, curved lugs, and convex stepped bezel, are polished/brushed. The dial is silver with Arabic numeral hour markers inside a railway-style minute/second scale. On the left is a black retrograde date arch from 7 to 11 o'clock, and on the right is a r day arch from 1 to 5 o'clock, both with blued cathedral-style indicator hands. Around the perimeter rehaut is a 52-week calendar with alternating black and red Arabic numerals and a black second scale, and there is a center sweep week indicator with a red triangle tip. It includes rose gold skeletonized feuille leaf hour and minute hands, and there are twin subsidiary dials including a color moon phase register at 12 o'clock, and there is a recessed retrograde month scale at 6 o'clock with a small circular leap year aperture window at its 3 o'clock position. It's water resistant to 30 meters/100 feet, and the 13mm thick case, dial, and movement are all signed. This Roger Dubuis Hommage Bi Retrograde Perpetual Calendar Chronograph H43 has a mechanical automatic self-winding Roger Dubuis caliber movement. It's rhodium plated with Cotes de Geneve embellishment, and the quality Seal of Geneva hallmark. It's constructed with 25 jewels, a shock absorber device, and a straight-line lever escapement. It includes a monometallic balance that's adjusted to five positions, a self-compensating flat balance spring, a swan neck micrometer regulator, and the mechanism oscillates at a frequency of 28,800 vph (4 Hz). This is a rare large Roger Dubuis Hommage Bi Retrograde Perpetual Calendar Chronograph H43 introduced in the 2000's.

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