This is a Montbijou by Orient. 1970s ETA cal. 2512 17 jewels, manual winding, 21600 vibrations/hour Regarding Montbijou (MONBIJOU), there are two theories: one is that Orient (ORIENT) commissioned a Swiss watchmaker to produce it as an OEM, and the other is that a watch brand called Montbijou (MONBIJOU) originally existed in Switzerland, and Orient (ORIENT) acted as a distributor and imported and sold the watches. The movement is an ETA cal. 2512 17 jewels, manual winding, from ETA, the largest movement manufacturer in Switzerland. The leather strap is aftermarket. The buckle has the Montbijou (MONBIJOU) "M" emblem. The history of overhaul is unknown, but it is running well. There is a curved shape like a circle in the center of the dial (please check the images). There are no accessories. Size: Case width (excluding crown) approx. 28mm Case length (including lugs) approx. 37mm Lug width approx. 16mm