An achievement of craftsmanship, engineering and artistry, the appearance on the market of this Patek Philippe Ref. 1415 Heures Universelles is momentous. Only two exist with a map of Eurasia, and it has been more than fifteen years since one has last been available for purchase. Its technical and aesthetic merits surpass every example in its category, and as a period advertisement for the watch noted, “For men with international interests, it is indispensable.” Click ahead to take a closer look at what makes this exceptional timepiece so coveted.