This is an authentic Omega Constellation ladies vintage steel watch bracelet with some 18ct yellow gold near where it connects to your watch.
The Omega logo is missing from the clasp however the clasp and bracelet are fully working.
This strap is 17.5mm wide at the top with a 12mm indent. It is about 15.5cm (6 1/8 inch) long. The clasp is stamped 6051/081. Please make sure your clasp is stamped 6051/081 before you order this.
I have given you photos of your watch bracelet from every angle. Please use them to add to this description.
If you are not sure if this will fit your watch or if you have any other questions then message me. I'm here to help you.