They look authentic to me and also to the optician who called Luxotica (owners of Ray-Ban) to ask if they were RXable.  They were and I am having them turned into prescription glasses right now.  I have done this many times.  Take a relatively cheap pair of sunglasses with good frames and turn them into prescription eyeglasses.  I refuse to pay 3 to 5 hundred for a pair of frames that aren't very good.  I would recommend these. Ray-Bans have always fit my face and my nose well.  That's without nose pads that lose their screw and fall off.  This brown color is new to me. and looks good.  I have had mostly black wayfarers and tortoise shell. Update for 4/2012.  I just bought a pair of New Wayfarers in tortaise.  I found unlike the guy who said the 52 size is more suitable for women and children that they fit my face better than the 55 size.  They are at the optical store right now having prescription lenses (transition in brown) put in them.  I recommend them to anyone.