Nice sunglasses. 100% Authentic. RB faintly engraved on the lens. Made in Italy on the ear piece. Came with black case, cleaning cloth and little booklet all wrapped in the retail Ray Ban box.  I went with the 55mm.  I have a huge head. I wear a size 8 baseball cap.  These fit my face well.  I love them so far.  My only complaint is the kind of creak and squeak when you put them on, or just open and close them. After some research online this seems to be normal for a lot of New Wayfarer owners.  Overall I am very satisfied with my purchase, especially the price.