Stores reference 6B/117. Approximately 5cm diameter. Swiss made movement. White metal case with white dial and black hands and numerals (60 in red). Engraved to rear 'A.M., 6B/117'. 1936 date code on the dial. Keyless winding and running for a period of 8-hours from fully wound. The chronograph action is controlled by the winding knob. The design and action of this mechanism are such that the second hand should indicate correctly to one-fifth of a second, and that starting and stopping errors should not exceed one-fifth of a second. Intended for general application and aircraft use. Light marks and scratches on the case and minor cracks on the dial. Good working condition. Stock code C24019.