It's rare to see fake metal frame Oakleys as reproduction costs would be too high, especially with some of the complex metal work design like on Juliets etc. You tend to find the fake Oakleys are of the plastic sports type range, usually ones of the simplest shape.
I've just bought a pair of Oakley Squared Whisker with polarised lenses, one thing I did notice is the name printed in very small lettering on the inside edge of the ear piece arm, never seen this done on the fake ones but its also not something that's on my other pair of Oakleys (Oakley Valves) which definitely genuine so must be something only done on metal frames.
BTW anyone interested in a pair of Oakleys, get yourself up to McArthur Glen Factory Outlet in York, the whole place is having a big sale on including the Oakley Store, I bought mine which should be a £230 pair for £120 and includes the usual 12month warranty etc.
Last edited by BULLITT; 19 July 2011 at 04:40 PM.