How you can know if your rayban sunglasses original?

Ray-Ban sunglasses with glass lenses usually will have the brand engraved into the glass lenses. If the lenses are plastic, the brand will be painted onto the lenses. Ray-Ban sunglasses will have the brand, model number, colour code & size painted onto the inside of the temples/sides. An example of a genuine Ray-Ban model code is RB2132 901 52-21. Ray-Ban sunglasses vary in price and range from $160 to about $400 AUD. Sometimes they may be slightly more expensive but the most common models are priced at $200 to $300 AUD (unless they have been reduced by the stockist).