The IWC Portuguese split seconds chronograph is a modern classic which was originally launched in 1995. The calibre based on a Valjoux 7750 was transformed into a manually wound split seconds chronograph by Richard Habring.
The pusher at 2 is for the -start/stop- , at 4 is -return to zero-, and 10 is the split seconds
Below, the majority of the base calibre is covered by the split seconds module.
In this deconstruction I adress only the modifications to the original Valjoux 7750 chronograph calibre. At a later date I will make a full deconstruction of a Valjoux 7750, which will then be linked to this model.
The complete set of hands. Time in gold and chronograph in blued steel.
The dial recto-verso. The numbers are made by being pressed/stamped from the dial material.
To learn more about IWC: www.iwc.com
From Hodinkee a link to an article on rattrapante wristwatches.
Watch lent for deconstruction by