My father bought this watch from the factory in Zurich in the early 70's. I would like to find the original bracelet. The watch seems to be quite rare as no matching photos appear anywhere. Any advice or help would be appreciated.
The one on the left is the type that you have with a removable bracelet. There were several types of bracelets offered and I have also seen these on a strap as well. The other two have an integrated style bracelet. The watch cases themselves are interchangeable only the bracelet attachment ring being different. Technically most Omega bracelets with a flat end attachment up to 20-mm would work, the ends would need to be cut down to 17-mm. The last link on mine is about 19.5-mm which meshes perfectly with the taper on the attachment ring. Best to start searching eBay for one.