These are 2x high quality spring bars that will fit all Cartier Calibre de Cartier 42mm watch models such as the 3299, 3301, 3366, 3389, 3576, 3578 and similar models.
If your watch is a 42mm Calibre de Cartier and it has the code 3299, 3301, 3366, 3389, 3576 or 3578 on the back of it then this will fit your watch
These are guaranteed to fit your watch.
I have given you photos of your spring bars 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.