This is a "Tresor" from Alpina's product line. It is a hand-wound watch from the 1940s. Case width is 2.8cm (excluding the crown), and lug to lug is 3.8cm. A vintage bamboo bracelet (lug width 16mm, belt width 12mm) is attached. It can accommodate wrist sizes from approximately 12 to 20cm. I am selling it to organize my collection. It is in beautiful condition overall, and the movement works perfectly. Please feel free to comment with any questions or offers. Thank you. #wristwatch #antique #vintage #1940s #KentoKaku #ArataKobayashi