Rolex, Oyster, Chronometre Scientific, Ref. 3009, no. 37791, an unusual and rare 18 carat gold indirect centre seconds wristwatch enamel dial, circa 1935, no. 10927, 18 jewel movement, screwed balance, adjusted in eight ways, indirect centre seconds, white two piece 'exotic' enamel dial, inner Arabic numerals, tracks for hours and separate minutes, outer track calibrated for 5ths of a second, blued steel hour and minute hands, red central tapered seconds hand, tonneau form case, polished bezel, screw down back and Oyster patent crown, case, dial and movement signed, Width 31mm. Accompanied by original Manchester retailers presentation box. Notes, This watch combines four features that make it a milestone in the production of Rolex watches. It was designed for scientific with a need for accuracy so it has a chronometer movement. The seconds hand is mounted in the centre to give a clear indication of the 5ths of a second that the dial is calibrated to, this is powered indirectly from the movement with an extra train of wheels. It has an 'exotic' enamel dial rare and unusual in its Scientific configuration and not susceptible to the normal deterioration due to atmospheric conditions and time. Lastly it is cased in the 'Oyster' style case typical for what followed and came known as the 'tool' watches for professional use.