Montblanc - Heritage Spirit Perpetual Calendar Sapphire
Presented at Watches & Wonders 2015, the Heritage Spirit Perpetual Calendar Sapphire timepiece, made of 18K red gold, showcases the mechanical splendor of its perpetual calendar grand complication movement through a transparent dial of smoky sapphire crystal.
The watch displays harmonious proportions, with a diameter of 39 mm and a thickness of only 10.24 mm. Its case with straight, refined lines and subtly curved horns fits perfectly on the wrist. Its design is embellished by the polished finish of the bezel and case-back and its satin-finished middle. This ultra-elegant watch model reinforces its visual impact on the wrist thanks to a transparent dial made of lightly smoky sapphire crystal that displays in a highly legible manner all the information pertaining to the perpetual calendar complication, enhanced by a unique moonphase indication.
The connoisseur's expert eye will admire delicately circular-grained main plate, some of the components of the perpetual calendar function, particularly the month and leap-year cams, the moonphase wheels, and also the levers and jumpers of the various different correctors that fix the position of the slender blued hands in their respective sub-dials.
The periphery of the dial features the Roman numeral XII and the red gold-plated facetted indexes, applied by hand. They clearly enhance the anthracite grey metallic circular-grained background.
The day of the week is displayed at 9 o'clock and the date at 3 o'clock. The current month is pointed to by the dedicated hand in the subdial at 12 o'clock, while the leap-year indication appears at the centre of this display.
So as to preserve all the magic of the transparent dial, Montblanc has opted to leave the entire moonphase disk visible. For ease of reading, the lower section of the moonphase subdial is adorned with a delicate circular guilloche pattern. This treatment, producing a slightly mat mirror effect, distinguishes the current moon phase (in the transparent part of the window) from the subsequent moonphase, and emphasizes the twofold golden moon travelling across a starry sky.
The self-winding calibre MB 29.15 powers the timepiece. For as long as the movement remains in operation, the calendar indications will require no further manual adjustment until the year 2100. If necessary, however, should the watch not be worn for a period longer than the duration of the power reserve of 42 hours, small correctors fitted into the middle-piece of the case allow for rapid and easy setting of the day, date, month, leap year and moon phase by means of a precious resin instrument specially developed for Montblanc.
The watch is worn on a black alligator-skin strap closed by a pinbuckle in 18 K red gold.
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