We've lost all archives in a fire that destroyed the main company building in 1940. Therefore, we unfortunately can't answer your question at this time. We offer you a special platform on "Join the club" where you can upload pictures of your watch as well as its history. Please visit this page in order to add your watch: http://www.tavanneswatches.com/index.php/tavannes-vintage-club/ This will help us reforming the Tavannes archives over time.