This is a curious Tissot T12 with some unique particularities, for instance the back is not that common, since it uses two pins to lock and seal the casing. This is a mens watch from the 70's. The add about this specific watch in the seventies said the following: Réf: 38804 Montre Automatic (Automatic watch) avec date (with date) super-étanche (Super-tight) acier inoxydable (Stainless Steel) petit modèle (Small Model) Specs: Model: Seastar T12 Reference: 38804 Movement: Automatic Caliber: Tissot 794 Complication: Day Watch Glass: Plastic Case: square Caseback: no galleon Shape: Square Dial Colour: Blue Crown: T-signed Bracelet: milanese Waterproof: 12ATM/394ft/120m (not tested) Date: C. 1971 Condition: Case some dents and scratches, but in overall shiny condition; dial pealing, lost some of the paint, mainly on the corners; bracelet in good condition; time keeping - not tested but it seems to be working like a Tissot. Basic Info | Listing number | 5O9AE8 | Reference number | 46804 | Brand | Tissot | Movement | Automatic | Case material | Steel | Year | 1971 | Condition | Fair (Obvious signs of wear or scratches) | Scope of delivery | No original box, no original papers | Gender | Women's watch | Location | Portugal, Lisboa | Caliber | Movement | Automatic | Movement/Caliber | Tissot 794 | Base caliber | Tissot 794 | Power reserve | 45 h | Number of jewels | 21 | Frequency | 18000 A/h | Case | Case material | Steel | Case diameter | 25 mm | Thickness | 10 mm | Water resistance | 10 ATM | Bezel material | Steel | Glass | Plastic | Dial | Blue | Dial numerals | No numerals | Bracelet/strap | Bracelet color | Silver | Clasp | Double-fold clasp | Clasp material | Steel | Functions | Date | |