With Patek Philippe Extract from the Archives confirming production of the present watch as a movement only in 1878 and its subsequent sale on November 12th of the same year.
At present only about 160 pocket watches with split chronograph seconds function have made it back to the market or can be found in various publications. Half of those watches display registers. The prestigious Geneva maker made about 900 such movements. It was actually the American market, which first demanded the split-seconds feature. This feature was mainly used for industrial (railways) or sports (horse racing) purposes. Some of the split second chronograph watches even have a repeating device, especially those made for either Tiffany, Bayley Banks & Biddle, Spaulding or Shreve.