Model: Daytona Reference: 6239 Date: Purchased 30th December 1970 Movement: 17-jewel Valjoux Cal.722-1 manual wind, free-sprung Glucydor Microstella balance, column wheel chronograph Dial: Sunburst silvered, applied polished faceted baton hour markers, black outer 1/5th minute track with 5 minute lume dot markers, sunken chocolate engine turned subsidiary dials at 3, 6 and 9 for constant seconds, 30 minute and 12 hour recording, polished baton hands with luminous inserts, centre chronograph hand Case: Brushed and polished tonneau form, 6239 between lugs, screw down back stamped CRS, tachymeter engraved to bezel, screw down crown flanked by twin pushers, No.1626196 Strap/Bracelet: Fitted brushed Oyster 78350 link, end links stamped 557 Buckle/Clasp: Signed folding clasp, stamped VF Signed: Case, dial & movement Size: 35mm Accompaniments: Rolex box, outer card, original Guarantee, original purchase receipt 注脚 The reference 6239 was the first model of the Daytona series, available in Europe in 1964. The model was produced in stainless steel, 14K gold and 18K gold, and was Rolex's first chronograph model to feature a tachometer scale on the bezel. To further enhance legibility on the dial, the subsidiary dials were printed in a different colour than the main dial. Early models featured only the designation "Cosmograph" on the dial, with "Daytona" being added to later series, after Rolex became associated with the NASCAR car races. The current lot is offered for sale by the original owner and was purchased in 1970 for £109 as a belated 21st birthday present. The vendor originally went in to purchase an Omega Speedmaster but upon finding that the store were out of stock was offered the choice of this Daytona instead. Up until circa 2000 the watch was regularly serviced by Rolex and has since been kept in a safe unused for the last 20 years.