百達翡麗，精細，18K金自動上弦腕表，配萬年曆、中心秒針、逆返日曆、閏年及月相顯示，型號5050，1994年製

With Patek Philippe Extract from the Archives confirming production of the present watch with opaline-white dial and yellow gold indexes in 1994 and its subsequent sale on 1 November 1995. Furthermore delivered with an additional plain caseback.

Reference 5050, Patek Philippe's first perpetual calendar wristwatch featuring a retrograde date made in series, was introduced at the Basel Fair in 1993, cased in yellow gold only. As of 1995, it was also available in pink gold, white gold and platinum but still exclusively with the silvered dial, applied Roman numerals, an aperture for the phases of the moon, the very first examples with outer railway minute divisions. Following substantial demand from clients, Patek Philippe introduced a second version featuring applied baton indexes, a modified moon phases display now in form of a circular subsidiary dial, outer beady minute divisions and the addition of the designation "Automatic".
Discontinued in 2002, reference 5050 is today a highly sought after collector's watch, a modern classic enjoying popularity both amongst scholars and aficionados for day to day wear.

Reference 5050 is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 296.