Corum Romvlvs Perpetual Calendar
Equipped with a perpetual calendar the Romvlvs Perpetual Calendar is also distinguished by the finishing of its CO-183 automatic movement. Housed in an 18-karat red gold case, this exclusive movement is entirely openworked and decorated by hand. Only 25 in all will be issued.
Openworked beauty and Haute Horlogerie
Thanks to its automatic CO-183 movement that mechanically programs the passing of time, the latest newcomer to the Romvlvs collection provides a complete display of the date, the day of the week, the month and the moon phases – and will continue to do so up until the year 2100 with no need for any adjustments. Once this date has been reached, a correction performed by a professional will ensure another full century of precision. The ultra-complex perpetual calendar mechanism indicates the date by means of a set of gear trains and cams taking account of the differences between 30 and 31-day months, and also handling the variable length of February according to the leap-year cycle. A paragon of slender elegance, the CO-183 movement is one of the thinnest in the world to offer these sophisticated functions.
All the parts are hand-crafted and decorated to create a skeletonized. To ensure the overall harmony of this creation, Corum has adopted a scrolling wreath shape that is systematically repeated on all the main parts. Remarkable care has been lavished on the oscillating weight. Crafted in 18-karat white gold, it carries the Corum brand name that appears to be literally floating in mid-air. The signature key logo is also featured. Meanwhile, the mainplate and bridges are beveled, engraved by hand and rhodium-plated.
The clover-leaf of time
While the guilloché-worked dial is a distinctive feature of the collection, the Romvlvs Perpetual Calendar is adorned with a sunburst guilloché motif. In all, four tiny subdials arranged in a cross shape display the full range of perpetual calendar indications. The month and leap-year indications appear at 12 o’clock, the date at 3 o’clock and the day at 9 o’clock. The phases of the moon are displayed at 6 o’clock, along with the Corum key and name in shining gold lettering. The hands and the clover-shaped appliqué surrounding the four subdials are also clothed in the same precious metal. Hinting at the complexity of the movement, the two subdials at 3 and 9 o’clock are graced with a central sapphire lens partially revealing the heart of the watch.
Corum has chosen a 41 mm-diameter case that is polished and topped by a satin-brushed version of the collection’s distinctive bezel. Equipped with a sapphire crystal case-back secured by six screws, it is fitted with a fluted crown engraved with a raised key symbol. The Romvlvs Perpetual Calendar comes on a black crocodile leather strap complete with an 18-karat red gold buckle.
Romvlvs Perpetual Calendar specifications
Limited Edition to 25 pieces
Reference: 183.510.55/0001 BN58
Movement
Automatic, perpetual calendar, CO-183
Frequency: 2,5Hz, 18,000 vibrations/hour
35 jewels
Special Corum finish, including hand engraved skeleton movement, main plate and bridges
18kt white gold oscillating weight hand engraved with the brand name
Functions
Hours and minutes in the center, indication of the day, date, phases of moon, month and year including leap year in 4 counters. 45-hour power reserve
Case
41mm diameter
18kt red gold 5N
“Wave-profile” bezel engraved with 12 Roman numerals
Fluted crown in 18kt red gold 5N engraved with the CORUM key
6-screw open back cover with anti-reflective treatment
Dial
Black, sun guilloché with 60 graduations
4 counters surrounded by an 18kt red gold 5N coated applique in trefoil shape
Date counter at 3 o’clock and day counter at 9 o’clock featuring transparent centers
Phases of moon counter at 6 o’clock, month and year counter at 12 o’clock
Outer flange carrying the minute circle
18kt red gold 5N coated hour and minute hands
Glass
Cut, shaped sapphire crystal with anti-reflective coating
Strap
Black crocodile leather, width 22/18 mm
Buckle
18kt red gold 5N buckle with Corum logo
Water
3 atmospheres (99 feet / 30 meters) resistance ■
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