This is an authentic Cartier Tank Française MM DJ gold-tone spring bar set (reference 96120). It comes as a sealed pack of 10 and is unused in the original Cartier International Service packaging.

The packaging is marked:
"624 96120
TANK/F MM DJ
VC2807941"

I have given you photos of this part from every angle. The pack in the photos is the exact one you will receive.

If you are not sure if this will fit your watch or if you have any other questions then message me.