With Patek Philippe Extract from the Archives confirming production of the present watch with engine-turned case in 1861 and its subsequent sale on 5 April 1864. Furthermore delivered with a Patek Philippe presentation box.
The present watch is fitted with Jean-Adrien Philippe stem winding and hour setting mechanism, patented in Paris on 22 April 1845, patent no. 1317. Philippe specified that his invention would be "applicable to all types of watches" - and indeed this feature can be found to date in timepieces which he could probably have never imagined: self-winding and ultra-thin wristwatches, quartz watches, calendar watches and diving watches, just to name some.