I have the 651-B's & I love them!! they fit wonderfully & feel so light. Make sure that yours have the Bulgari engraved in the left lens & check the right arm for a raised serial #. I'm not sur how they are able to sell them for $160 under retail I heard frommy SA that they do not wholesale & rarely go % sale. In fact Bulgari had never lowered prices in the whole time she had worked there.
They are beautiful glasses & I'm sure you will LOVE them, just make sure they have the engraved name & raised invisible serial #. Enjoy & congrats