Look at the two images below one is K9-DS the other is AU-58, can you tell the difference? Just by looking you cannot. I know, I know you are saying to yourself "Mike, it's impossible to tell the difference", but wait, through laboratory study I can tell you non-experts how to authenticate a real slab chip with 100% accuracy! First take both the K9-DS and the AU-58 and put them in the sun for 30 minutes. When you return flies will be all over the K9-DS, BUT even the flies WILL NOT TOUCH the AU-58! Now you can ALL be experts in slab authentication. The flies don't lie!

ANSWER: Believe it or not the slab was the one on the RIGHT (I tested it). Whew! it could have ended up in my collection too! THAT could have been very embarrassing! Remember the FDL ( Flies Don't Lie ) Test. NEVER BE FOOLED AGAIN!