1940s Anonymous Val-23 Stainless Steel 34mm Clamshell Chronograph Gray Dial

This is a rare ss 34mm clamshell chronograph with grey dial, manufactured in the 1940s and equipped with an unknown and famous Valjoux 23. It is equipped with the famous Valjoux 23, which was used by many brands including Rolex in the same period. The case is a 4 screws type water resistant case called clamshell, and the rare gray color dial with black circle is a great gem with rich design and quality though it is unknown. The 34mm clamshell chrono is usually equipped with Venus movement, and the Valjoux movement is very rare.