There were 10 watch schools based schools in Switzerland 6 are still operating today, the earliest started in Geneve in 1824. The watch below was made at the Ecole d'horlogerie de Porrentruy, that school was started in 1884. This particular watch was made in the 60's and was based upon the Pre-Carrera Heuer reference 409. The watch was a culmination of training where students attended the school for a period of 3 - 51/2 years. In Porrentruy at the time they had 2 levels of graduates, the D'apprenttissage horlogerie and the Ecole d horlogerie, the latter indicates a longer and more detailed training. The students would choose the material of the case (steel, chrome, gold) and movement (3 hand, chronograph tripledate moonphase chronograph) it all depended on the students budget since he had to pay for this separately. The example below is and interesting example. Case: 3 piece waterproof steel case with solid 14K bezel and pushers. The lugs appeared to have been machined down and 14K gold was forged onto the lugs. interesting that the student opted to start off thick at the end of the lugs and taper them down as it came up to the case. The case was delivered by Heuer and I assume the student applied the gold onto the lugs. I am not familiar with the Heuer but I am assuming the applied gold was done by the student. Movement is a VJ23, same as the one used by Heuer, There is a small difference of the chrono bridge which is different than the Heuer and obviously no signature on the movement. The student did all the finish work on the movement including the anglage. The movement was sourced by the school. Dial: Dial is a derivative of the Heuer 409 but has the school signature.