Ask the seller for the serial number that is usually stamped under the nosebridge frame. 

     The serial number is very small, call  Cartier at (800) 447-7405 and tell them the number to make sure the glasses are as described.

    All Cartier Eyeglass Frames and Sunglass Frames are serial numbered, and can be verified at any Cartier Store also.

This is my pair of Santos  and says 598863

The back side of the nosebridge has  Cartier in script, PARIS in block lettering. The next line has numbers that tell first the lens width in mm, the

Cartier interlocking C's logo last the nosebridge width in mm. My Santos say, 59 (logo) 14.

This is fake. just look at the offset stamp. Has frame model number the logo then the nosebridge width in mm      The numbers are Twice the size of normal. No Cartier and Paris on the nosebridge. Says 566 (logo) 15.             

.Ask if they are glass lenses, not plastic. Polarized lens are new ( real DUMONT aviators) and are GLASS (  I tried them on at LensCrafters!).

 Cartier marks one temple (left) with Cartier  Made in Paris and the temple length.  The right side with the millimeter measurement of the temple length only, like this Vintage Santos.

It says 135

This next picture is of a FAKE!!! You can see this is the right temple. and has Cartier on it!

I've also noticed on Vintage Cartier metal frames the plastic on the temples are Burgandy colored.

Very important! Is the insert in the Temples... They are hand engraved!!! Gold Too!  As you notice the temple insert is flush to the burgandy plastic.

And not a casting or stamped . . This is a Fake Bubinga wood Temple insert. Look how shoddy the craftmanship. The insert sits indented to the surface. The Cartier name is shiny and RAISED, also the BACKGROUND is matted. Is it machine stamped? Might be Gold?

If you need more info or larger pictures.  If I can make any points clearer to you I will be happy to write. I'm trying to get a macro lens to take Real close up pistures.

I have been ripped off so you don't have to!

I hope everyone elses find of Cartier glasses are Genuine!

Thanks for reading this review!

Mikey