.Good, authentic vintage condition. The case shows age-related signs of wear but is unpolished with sharp edges. The movement is visually in excellent, well-preserved condition. An absolute highlight for collectors of rare Swiss chronographs. Case material: High-quality “Acier Inoxydable Staybrite” (historical premium stainless steel). The inside of the case features a flawless pearl finish (perlage) and the serial number 104325 Movement: Manufacture caliber Minerva 19-9 ch with column wheel control, 17 jewels. Very clean condition, bridge signed “Alpina.” The movement starts up and the chronograph function engages precisely (start, stop, and reset exactly at 12 o’clock) Dial: Original, two-row technical dial with a beautiful, even patina of age. 30-minute counter at 12 o’clock and small running seconds at 6 o’clock Accessories (Very rare!): Included in the delivery is the contemporary, original steel bracelet with the historic carabiner clasp (swivel), which fits the Staybrite case perfectly A service can be performed prior to sale upon request.