Brand: Sicura Model: Superwaterproof 400 (Vacuum Tested) Origin: Swiss Made Period: 1970s (Caseback marked with the iconic 1968 Sicura sea monster emblem Case Diameter: 40 mm The external bezel shows heavy, authentic fading and wear on the red/blue "Pepsi" sector (from 12 to 3 o'clock), adding massive vintage appeal. The upper crown (used for winding and time setting) operates smoothly and functions as it should. The upper lower (used for rotating the internal bezel) shows heavy wear and loss of chrome plating, but it remains functional. Movement: The 23-jewel manual movement is running, ticking, and keeping time. Date changes correctly.