This is an authentic Omega Speedmaster steel watch clasp that is in good condition and full working order. This clasp is Omega reference number STZ004194 and it will fit a strap that is 18mm wide at the clasp end.
Before you order this please make sure your clasp has the code STZ004194 on it's underside or this will not fit your strap.
The clasp is in full working order. I have given you photos of your watch clasp 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.