Vintage Citizen Challenge Timer "Bullhead"Chronograph (Ref. 67-9011)serviced2025

This watch also comes with a custom made leather Bund cuff !  Core SpecificationsBrand:  CitizenModel: Challenge Timer Bullhead  Case & DimensionsCase Material: Stainless Steel / Base MetalCase Width: 38 mm (excluding crown)Case Length: 42 mm – 45 mm (lug-to-lug)Thickness: 14 mmLug Width: 18 mm  Case Architecture: Bullhead design (crown and chronograph pushers located at the 12 o'clock position)  Movement DetailsCaliber: Citizen 8110A  Movement Type: Mechanical AutomaticComplications: Column-wheel Chronograph, Flyback function, Day/DateJewel Count: 23 JewelsVibrations Per Hour: 28,800 A/h (Hi-Beat)Power Reserve: Approximately 40 hours  Dial & InterfaceDial Color: Yellow with black sub-dials (Panda configuration)Sub-dials: 30-minute counter (at 3 o'clock) and 12-hour counter (at 9 o'clock)  Day/Date Indicator: Vertical orientation located at the 6 o'clock positionOuter Ring: Tachymeter scale  Day Quickset: Advanced by pulling the crown out to the date-setting position and pressing the chronograph reset pusher  This particular watch was made in October 1980