Chopard, Mille Miglia Split Second, Ref.1261, n° 1237643, limited edition n°12x/250, circa 2010. A massive and rare split-seconds chronograph in yellow gold, tachometric bezel, black dial, external minute track, luminous gold hands and hour markers. Permanent seconds at 9 o'clock, 30-minute and 12-hour totalizers, date on gold ring with hand at 3 o'clock, split-seconds chronograph function. Transparent screw-down caseback, self-winding mechanical movement caliber ETA 7750 (Valjoux). Original gold buckle. Our chronograph is in perfect working order, as is the rare split-seconds function, with the occasional micro-scratch on the case and buckle. The caliber 7750 has gone down in watchmaking history as one of the most widespread and reliable movements. Designed in 1974 with a real focus on efficiency and robustness, thanks to an economy of components (originally only 240), it is often affectionately referred to by watchmakers as the "tractor", like the brand's movements with the crown. Diam 45 mm - B.P. 196 g. A massive and rare yellow gold split-seconds chronograph, tachymeter bezel, black dial, outer minute track, luminous gold hands and applied indexes. Permanent seconds at 9, 30mn and 12h registers, date by hand on gold ring at 3, split-seconds chronograph function. Transparent screw-back, automatic winding movement caliber ETA 7750 (Valjoux). Original gold pin buckle. Our chronograph works perfectly, as does the rare split-seconds function, with micro-scratches from use on the case and buckle. The caliber 7750 has entered the history of watchmaking and is one of the essential movements because it is one of the most widely distributed and reliable. Designed in 1974 with a real objective of efficiency and robustness thanks to an economy of components (only 240 originally), it is often affectionately called by watchmakers the "tractor", like the Rolex's tools movements.