ECOLE TECHNIQUE VALLEE DE JOUX WATCHMAKER SCHOOL WRISTWATCH Ecole Technique de la Vallée de Joux, Switzerland, Chronomètre Automatic, movement no. 3623041, case no. 9803 (inside caseback), circa 1970 A very unusual, rare and collectible, automatic, gold plated, tonneau-shaped chronometer and chronograph watchmaker school wristwatch with champagne dial, luminous hands, date, applied gold indexes, luminous dots, outer 1/5th second and minute division, central 60-minute hand, 12-hour register, constant second, outermost tachymeter scale on gilt inclined ring. Fitted with a Cal. LWO1340, self-winding, 17 jewels, shock-absorbers, monometallic balance, shock-absorbers, screwed steel case back, Omega gilt crown, round chronograph pushers, hesalite glass. Dial signed, inside caseback numbered, movement numbered. Dim. 38.10 x 43.30 mm. Thickness 15.60 mm. The present watch is rare specimen from the famous Horological School of Vallée de Joux.