This is an authentic Omega cream watch hang tag that came with an Omega De Ville Prestige 27mm ladies watch. Your tag measures 3cm by 2cm and still has the original string. The writing on the back reads 45805100, 58191523, 1470.
45805100 is the model number, 58191523 is the serial number and 1470 is the movement number.
These tags are not available for sale individually from Omega and are only ever sold with a watch. This is a rare chance to complete your set so your watch has everything it was originally sold with.
I have given you photos of your watch tag from every angle. Please use them to add to this description.
If you have any questions then please contact me at Sales@TheWatchLink.co.uk. I'm here to help you.