Model: Anti-Magnetic Oyster Chronograph 'Pre-Daytona' Reference: 6234 Date: Circa 1960 Movement: 17-jewel Valjoux Cal.72 manual wind, adjusted to 3 positions, column wheel chronograph Dial: Silvered, applied polished dart hour markers, black outer 1/5th second divisions with luminous dot 5 minute markers, blue outer telemeter scale, black outer base scale, 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, screw down crown flanked by twin pushers, personal engraving to back reads 'P.W.D from all at Schweppes (USA) Ltd Oct 57 - Jan '60', No.425676 Strap/Bracelet: Black associated leather Buckle/Clasp: Signed steel buckle Signed: Case, dial & movement Size: 36mm Accompaniments: Rolex box, outer card, Guarantee, service receipt dated 28/11/2007, original glass 注脚 Offered between 1955 and 1960, the reference 6234 was one of the forerunners of the Daytona collection and as such is known by the nickname 'Pre-Daytona'. With such a short period of production the 6234 is a highly prized watch with limited availability. It is believed that approximately only 2300 examples were released in steel and naturally far less in gold. In 1960 Rolex replaced the 6234 with the 6238 which also shares the nickname of 'Pre-Daytona'. The current lot was gifted to the original owner, the great Grandson of Charles Darwin, as a thank you gift when he left the Board of Directors of Schweppes in 1960.