A book being entitled:
Ten Swiss Watchmaking Schools
Edited in 2010 at the Simonin’s editions
This book relates the complete history of all of these schools
Here is some watches of the watchmaking school of Porrentruy
Assembled during my 4th year of apprenticeship at the Porrentruy Watchmaking School, this chronograph is based on a Valjoux 726 movement. I personally modified the case back to add a glass window, allowing the mechanism and its operation to be admired.
Started in 1983 and completed in 1984, during my 4th year of apprenticeship at the Porrentruy Watchmaking School, this watch is based on an I.W.C. calibre C.67. I filed and bevelled the bridges, polished the edges, and manufactured both the balance staff and its Breguet hairspring.
It successfully passed the demanding tests of the Chronometric Observatory, obtaining the distinction “particularly good results”. An official certificate from the SSC – Swiss Society of Chronometry confirms these performances.