SIGNED H. MOSER & CIE, ENDEAVOUR PERPETUAL CALENDAR MODEL, REF. 1341-0300, CASE NO. 102'212, CIRCA 2015

Originally launched in 2005, the H. Moser & Cie Endeavour Perpetual Calendar is often regarded as the 'smartest' perpetual calendar timepiece in the industry. Ten years later in 2015, the model was refreshed with newer and more modern aesthetics. Upon first inspection, the dial is very minimal for such a complication, contrasting the classical three-register layout in which many traditional perpetual calendar timepieces utilize. H. Moser & Cie has drastically simplified the display with small arrow indicating the month, along with an impossibly large date window.

On the rear, a sapphire concave caseback reveals inhouse manual-winding caliber HMC 341.503, boasting incredible finishing and an intricate leap year indicator. Additionally, the movement has 'hacking' or stop-seconds, which is seldom seen in perpetual calendars.