The bar code is the first giveaway. Even though they used the Quad cover, I believe that those fake Quads still have the stereo prefix on the spine, rather than CQ, PCQ, EQ, etc.
I would tell him for educational purposes.......when did the album come out, 1974 or something? I don't recall seeing any barcodes back then!
No need to get into the weeds about quad pressings repackaged and released in 1989 or something...."Well it could have happened, right?" Yeah....