Swiss. Features a 17-jewel Tudor "Auto-Prince" automatic movement with sweeping center seconds hand. Gold filled. Tudor. Dial marked, "Tudor Automatic Rotor Self-Winding". Movement marked, "Tudor Swiss Patented Auto-Prince Swiss Made 17 Rubis". Case Diameter: 32.9mm. Gross weight of assembled watch: 65.15g. Dial exhibits light toning, most noticeable surrounding the center. Case exhibits heavy wear through to the gold plating. Functioning. CODE-WAT