The IWC Large 52 S.C. Calibre Pilot’s Watch
The second professional-standard pilot’s watch from IWC was commissioned at the beginning of the Second World War by the German Luftwaffe. Fitted with IWC’s 52 S.C. calibre (second au centre – central seconds hand) pocket watch movement, it featured a sweep seconds hand that could be stopped to facilitate precision setting. Approximately 1,200 watches featuring the 52 S.C. calibre were produced in the early 1940s and used in deck watches for the British and pilot’s watches for the Germans. The outstanding features of this watch included the mat steel case, the extra-large crown for easy setting and winding, the black dial with its extra-bright luminous hands and figures, the stop-second function for exact setting, and the extra-long leather strap, designed for fastening over a flying suit. The large pilot’s watch from IWC also featured an inner plate designed to shield the movement against magnetic fields.
Movement: IWC, 52 S.C. calibre Diameter: 19- ligne /43.15 mm Thickness: 7.5 mm Beats per hour: 18,000 Jewels: 16 Displays: hours, minutes, sweep seconds hand
Movement design: bar movement, bimetallic balance with weights and adjustment screws, Breguet spring adjusted for various temperatures, swan’s neck regulator, indirect sweep seconds hand, stop second. In accordance with military requirements for deck and pilot’s watches, the movement was adjusted in five different positions
Case: matte stainless steel case with leather strap Diameter: 55 mm