In Reply to: easy to test if polarized posted by PemboSix on Monday, 16. April 2012 at 12:47 Bali Time:
Any of the sellers who sell the polarised sunnies will have a card that when you look at it with polarised sunnies on you will see a fisherman or racing car or something that is not there when you look at it without them.
If they dont have a test card, dont trust them, but the trick with 2 pairs of sunnies works very well as well.
Cheers
Mark