The HM Perpetual Moon Aventurine offers one of the most accurate moon phases on the market, with only one day's deviation every 122 years at which point a single push on the corrector will keep it in sync for another 122 years.
The case, in 18kt red gold, measures 42mm. It has an AR-coated sapphire crystal, a sapphire display back, and it is water resistant to 30 meters. Viewed from the side, the casing is stepped and tapers from top to bottom, the widest section accommodating the extra-large glass with the lower part narrowing to fit snugly on the wrist.
Movement is the Swiss manual-wind Arnold & Son in-house caliber A&S1512 with 27 jewels, 21,600 vph and a power reserve of 90 hours. Functions are: hours, minutes, big perpetual moon, and second moonphase indication on the back for setting purposes.
Movement decoration: nickel-silver movement, rhodium treated with Haute Horlogerie finishing: manually chamfered bridges with polished edges, fine circular graining and Côtes de Genève rayonnantes, and blued screws with polished and chamfered edges.
Dials: Aventurine stone dial, translucent blue lacquered guilloché moon disc with a 18kt red gold moon and stars; back dial: fine circular graining, rhodium treated, rendition of the 8 phases of the moon. The 29mm moonphase disc, which runs from 10 to 2 o'clock on the dial, reveals one of the largest moons on the market with a diameter of 11.2mm for the moon alone. Additionally, this large moon is one of the most visually stunning recreations of the moon because it is a three-dimensional sculptured moon that was first hand-engraved and then duplicated in a 18kt red gold plate for the series. The sculptured moon is then inserted into the guilloché disc.
It comes on a hand-stitched brown alligator leather strap with an 18kt red gold buckle.
Thanks.
