SOLD Technicum Cantonal Bienne, rare school watch

SOLD
Chronomètre Technicum Cantonal (Bienne) : very rare school watch, stainless steel case, high quality movement, lever escapement, 17 rubies, "côtes de Genève".  

Similar watches are illustrated in the book "Dix écoles d'horlogerie suisses, chef-d'oeuvres de savoir-faire (The ten Swiss watchmaking schools and their masterpieces of horological know-how)" by Antoine Simonin and Estelle Fallet, 2010.