Hello, Could someone please tell me where to get a bag exactly like this one.

I don't know if it's an expensive one. It's my girlfriends bag, the strap bad broken off and she gave it to me to fix. I managed to re-attach the strap but in the process have scratched the metal really badly. So I need to replace it asap and with one exactly the same!! I have no idea about handbags, whether this one is still made or where I could buy it from.

Any help would therefore be much appreciated. thankyou!