Model: Cosmograph Daytona Reference: 116520 Date: Purchased 14th February 2011 Movement: 44-jewel Cal.4130 automatic, Microstella balance with freesprung Parachrom spring, adjusted to 5 positions and temperature, No.C0538568 Dial: White, luminous filled polished bullet hour markers, black outer 1/5th second divisions, engine turned subsidiary dials at 3, 6 and 9 for seconds, 30 minute and 12 hour recording, polished pointed baton hands with black inserts, centre chronograph hand Case: Brushed and polished tonneau form, screw down back, screw down shouldered crown flanked by twin screw down pushers, tachymetre to bezel, No.8394F525 Strap/Bracelet: Fitted brushed and polished 78590 Oyster link Buckle/Clasp: Signed folding clasp, stamped P1F Signed: Case, dial & movement Size: 39mm Accompaniments: Rolex box, outer card, International Guarantee, spare link, swing tag, instruction manual, brochures 注脚 The Ref.116520 was introduced at Baselworld 2000 with Rolex's first in-house chronograph movement. This particular model is a rare example of the 116520 and is nicknamed the "APH Daytona" thanks to a dial configuration in which the "R" and "APH" in the word "Cosmograph" appear to by slightly separated. This version was produced between 2011 and 2014 and is quite difficult to find. The current lot was originally purchased in February 2011 making it one of the earliest examples produced.