This is a very nice vintage 30-40's LeCoultre "rose gold" rare watch. It is a 19.5mm x 35mm watch with what seems to be the orig.
Kiel on the back and is a wind up model. This is a tank style watch that is marked #350174 and 10k on the inside. The watch has a small second hand that is at the 6 o'clock position. This is a great find!! This watch is working at this time. Sorry however I do not clean my items dur to the time involved.