Is this RL sweater authentic?

I'm not sure..but it's definitely from a thrift store (hence the staple through the tag where the price once was), which makes me believe the seller wouldn't even know if it was legit or not. I have never seen any knitted sweaters like that copied, though...Only the polo's. Just my 2 cents.

I have seen polo sweaters with the same patterns during different years and seasons. I don't know if that means the sweater is legit or not but they ahve definitely reused old patterns. I agree with MiamiRedSkin, you don't see many knit sweaters with that kind of detail copied.