Datei:Edouard Koehn à Geneve, Werk Nr. 78383, Geh. Nr. 78383, circa 1900 (2).jpg

repeating pocket watch with split seconds chronograph via three pushers Case: 18k gold, tiered, polished, à goutte, signed gold dome, pusher for chronograph at "3", "11" and via crown, slide for repeating mechanism. Dial: enamel, Arabic "Empire" numerals, auxiliary seconds with radial red Arabic numerals, 60 min. counter, blued spade hands. Movm.: 3/4 plate movement, rhodium-plated, ground, 8 adj., 41 jewels, finely ground, bevelled chronograph steel parts, ratchet wheel, ground, bevelled double hand tong with polished bevelling, separate ratchet wheel for split seconds chronograph, 2 hammers, 2 gongs, gold screw compensation balance, blued balance spring, index spring fine adjusting device, counterpoised lever.

Edouard Koehn (1839-1908) He was born in Germany and studied at the horological school of Geneva. He began as a simple repairman with Patek Philippe and became a partner. In 1891 Edouard Koehn bought the company of H.R. Ekegren. The level of quality awareness he adopted during his many years with Patek Philippe is reflected later in his own designs and works.