Harry Winston Premier Excenter Perpetual Calendar Platinum watch: limited to 20 units

Celebrating the 20th anniversary of its highly successful Premier Excenter Perpetual Calendar timepiece, the American Harry Winston Diamond Corporation, which is (comparatively) recently into Swiss watch manufacturing, has presented a very special edition model limited to only 20 units.

Made of solid platinum, the Harry Winston Premier Excenter Perpetual Calendar Platinum automatic watch comes in a medium-sized 41mm case.

The precious body nests the same GP 3306 QP (aka GP 3330 that we have seen in the gorgeous Girard Perregaux Vintage 1945 Large Date Moonphase model) self-winding movement manufactured in-house by the Swiss watchmaker Girard-Perregaux and upgraded with an add-on Agenhor 111.HW module.

The add-on module literally adds a couple of retrograde mechanisms operating the date and month complications as well as a leap-year indicator that includes a rotating disk with 1-2-3-4 numerals (the “4″ is for the leap year) with the current year indicated by a small white triangle printed on the dial.

Thanks to the module’s relative compactness (34 mm in diameter, it is only 2.40 millimeters thick,) the automatic caliber also stays very slim measuring only 5.60 mm in height.

Besides the perpetual calendar, date and month dials, the watch also features a moonphase indicator and a yellow-painted second time zone hand, which is set by a pusher located at 2 o’clock.

Taking into account how much time it usually takes a frequent traveller to re-adjust a perpetual calendar watch each time he finds himself in a new GMT zone, the easily-operated GMT indicator may be very useful.

The watch’s engine-turned anthracite or silvered dial with a moire or watered-silk effect provide for a contrast background, so, although a little bit busy with data, the watch is still quite legible and doesn’t require too much effort to read the date and time.

In fact, I would even nominate this limited edition watch for the title of one of the most legible perpetual calendars in the world.

Photos: Harry Winston

Harry Winston Premier Excenter Perpetual Calendar Platinum watch specification:

Price range: $68,800
Movement: Automatic
Complications: Date, day, second time zone, perpetual calendar, moon phase, retrograde, leap year
Power reserve: N/A
Case material: Platinum
Case diameter: 41 mm
Case height: N/A
Dial: Anthracite or silvered
Water resistance: 30 meters
Strap: Hand-stitched black alligator, white gold folding clasp
Crystal: Sapphire, anti-reflective