Model: Speedmaster Professional Reference: S105.012-63 Date: Circa 1963 Movement: Pink gilt 17-jewel Cal.321 manual wind, column wheel chronograph, No.20521394 Dial: Black, luminous baton hour markers, white outer 1/5th second divisions, subsidiary dials at 3, 6 and 9 for seconds, 30 minute and 12 hour recording, white pointed baton hands, centre chronograph hand Case: Brushed and polished tonneau form, screw down back, inner cap, tachymetre to bezel with dot over 90, shouldered crown flanked by twin pushers Strap/Bracelet: Black rubber Buckle/Clasp: Associated steel buckle Signed: Case, dial & movement Size: 41mm 注脚 In 1964 Omega launched the reference 105.012 which was the first of the Speedmasters to have Professional on the dial. The current example is a very early version with the suffix -63 which were delivered very early in 1964. The dial correctly does not have T on either side of Swiss Made as was the case with the examples first delivered in February and March before Omega adhered to new legislation. The current lot belonged to the vendor's father and has been in the same family since new.