Thank you for your answer; Yes it seems like but sure it is not cal.208. This one has a oval with 4500 stamped inside near the balance bridge (never saw this type of marking on JLC). On the other hand, it was not unusual for english manufacturers (of that time) to use JLC calibers. For example Smith...

Based on design and balance bridge I think that it might be a Jaeger-LeCoultre; if yes, please help me find the caliber. https://lh3.googleusercontent.com/mQpMXnf7qWHCxaJCXL0wI0D_L3Sd0onbkp-5eZODbkwAKl3uSs_mY3IA50KJVvkVclodPVQN6A6tSk3_5dMmlsAgp7sJ12bZBW1eATsjiJLCUpOtLcvevL7nQ1CWOlHqxKFxClraGi5iCExR...