The Vintage Wrist Watch Company has dated this piece to the 1950s.
The movement is signed Oris Watch Co, Swiss.

The watch measures 33mm wide excluding the winding crown and the lugs. The case is plated and the condition is good for a 1950s watch with just minor marking. The screw-on case back is stainless steel.

The lens is in lovely condition.
The dial is signed Oris, Waterproof, Anti-Shock, 15 Jewels, Swiss Made. As with any vintage watch, I would not rely on it still being waterproof. There is some light marking but overall it is very acceptable for a 1950s piece. Original hands and red centre seconds hand.
A new brown leather strap has been fitted.
The Vintage Wrist Watch Company has dated this piece to the 1950s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page