Technicum Le Locle Triple Date Moonphase Chronograph “Datocompax” School WatchThis moonphase and annual calendar complication chronograph, known as a Dato Compax, is a particularly special piece! Referred to as a school watch or montre cole, this watch was created by a watchmaking student as part of their practical dissertation to graduate. Swiss technical colleges, like the Technicum in Le Locle, were established in the late 19th century to meet the demand for formally trained watchmakers, a crucial role in Switzerlands

and Vendôme

being the first wristwatch chronographs with hour counters at the time of their introduction

plexiglass

with gold text and a railroad track with small Roman hours in it

- Perpetual calendar three sub dials layout with moonphase

The silvery dial has aged lovely over the years

Ebel’s offerings included perpetual calendars crafted in precious metals

-Audemars Piguet cal

is in very good condition

The rare cream glossy dial has applied Roman numerals and crisp black text with a railroad track around the outside

‌Specifications:

known by collectors as the Tapestry dial