Patek Philippe’s reference 5004, introduced in 1996 was the firm’s first split-seconds perpetual calendar chronograph wristwatch to be produced in series. Additionally, reference 5004 was the only split-seconds perpetual calendar chronograph wristwatch that Patek Philippe produced using a Lemania based movement. The firm later switched to using an in-house movement with the introduction of the reference 5204. Discontinued in 2012, reference 5004 has since achieved cult status amongst collectors today, and is considered to be one of Patek Philippe’s most important modern wristwatches. Reference 5004 comes from a long lineage of milestone wristwatches from the firm, including its slightly less complicated predecessors: the reference 1518, 2499, and 3970 perpetual calendar chronograph models. Produced in yellow gold, pink gold, white gold and platinum - platinum versions of this model remain the most desirable of the four metals. Reference 5004 perfectly combines Patek Philippe’s signature design, highest level of complications, and uncompromised approach to quality. The present watch is fresh to the market, offered in absolutely untouched condition - "double-sealed" in the packaging it was in the day it left the factory. Furthermore, this example is accompanied by the second sapphire crystal caseback, presentation box, and original certificate of origin.