Mens Vacheron Constantin Malte Perpetual Calendar Open watch, platinum case (38.5mm diameter) with see-through sapphire crystal back, blue crocodile strap with platinum tang buckle, open dial exposing the watch's mechanism, hours, minutes, perpetual calendar with retrograde date display, day of the week, month and leap year indicators, 27 jewel #2460 Caliber self-winding mechanical movement, scratch-resistant sapphire crystal, water-resistant to 30 meters.
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