
Model : Sea-Gull
海鸥
Manufacturer : Tianjin Watch Factory (天津手表厂)
Year of Production: 1970s
Case Diameter :
Weight w/o strap: g
Movement Model : ST5B (19 jewels)
Type : Hand Wind
This is a Sea-Gull watch for China Railways the logo of which is on the dial. See wiki page here. However, it is not the railroad standard...