SEA-GULL 1963

Brand: Sea-Gull (海鷗). Reference: 1963. Mechanical, manual winding. Launch date: 2024-June-Date?

Chinese character:
22 ZUAN (钻/占) - 22 JEWELS. Position: 12 o'clock on dial.
中国 - China. Position: 6 o'clock on dial.
天津手表厂 - Tianjin Watch Factory. Position: at 6 o'clock on dial and on movement plate.
中國空軍航空計時碼表 - China Air Force Aviation Chronograph Watch. Position: on case back.
中國  天津 - China Tianjin. Position: on case back.
中國空軍 - China Air Force. Position: on movement plate, visible through case back.

MOVEMENT
Mechanical, manual-winding. China Made. Caliber: Sea-Gull ST1901. Column-wheel chronograph. Functions: Hour, minute, second, chronograph (Central hour, minute and chronograph seconds hands, small seconds hand at 9 o'clock, 30-minute counter at 3 o'clock.). No hacking (Seconds hand does NOT stop when crown is pulled out). Jewels: 22. Frequency: 21600 vph. Power reserve: Around 42 hours.

CASE
316L stainless steel. Diameter: 37.4 mm. Thickness: 15.1 mm. Lug width: 18 mm. Water resistance: 30 meters. Weight: 60 grams (the whole watch including strap). Luminescence: No lume. Dial: Ivory white. Applied hour markers, numerals and a five-pointed star. Crystal: Glass. Case back: Screw-down decagon shaped. Transparent. Crown: Push-pull. Fluted cylinder shape.

STRAP
Army green. Nylon. Fit for case lug width: 18 mm. Clasp: Pin buckle. Stainless steel clasp.