百達翡麗，罕有，18K金懷錶，配琺瑯錶盤及18K金鏈子，機芯編號164'069，錶殼編號500'325

At the luxury end of the scale, in the late 19th and early 20th centuries, Patek Philippe dominated the market for time-only pocket watches such as the present watch. Housed in a heavy 18k gold case and with clean, understated and easy to read white enamel dial, it is also fully signed on the dial movement and case. The quality of timepieces such as this is impressive, their finishing and technical superiority showcased Patek Philippe’s unwaveringly high standards as surely as any of the company’s complicated watches.

The ébauche of the present watch is based on Adrien Philippe's patented design US patent o. 20483 of 13 January 1891, the S-shaped minute train bridge now considered one of the company’s hallmark designs. The cut bimetallic compensation balance has a Breguet balance spring regulated by François Wilmot's patented micrometric cam regulator, US patent 129197 registered on 16 July 1872.

On the back of the case, is an unusual three-lobed design executed in black enamel, the specific meaning of which, if any, is not yet identified.