IWC, Doppelchronograph, Split

IWC, Doppelchronograph, Split, Ref. 3713. A fine and rare, self-winding, stainless steel wristwatch with round button, split-seconds chronograph, three registers and day and date, circa 1997. Case: Two-body, polished and brushed, concave lugs, stepped bezel, screwed-down case back and crown, push-button at 10 is for the split-seconds chronograph function, sapphire crystal. Signed IWC buckle. Dial: Matte black with white Arabic numerals and luminous indexes, outer 1/5th seconds track with 5-minute/seconds Arabic markers, apertures for the date and the day, subsidiary dials for the seconds, 12-hour, and 30-minute registers. Luminous steel baton hands. Signed IWC. Movement: Caliber 79230, rhodium-plated, 29 jewels, straight-line lever escapement, monometallic balance, self-compensating fl at balance spring, shock absorber, index regulator, hack mechanism. Signed IWC. Condition: Dial is mint with no blemishes. The tritium markers and hands have aged to an ivory white which contrast with t