Got the item today and it is the real deal. Fully inspected all parts. I did not take the shield off the chip, but you can tell by looking at it that is original and not modified. The sticker residue is definitely old and I would bet from the original red sticker from the original box (too bad no box!). Took my own set of pix, then put it all back together and played it for the first time (well, um, I have a repro too, but that doesn't count!)
Anyway, not sure who maintains the "official" PI list, but you can add this "Texas Thrift Store" Pepsi Invaders to the list. I am 99% sure it is authentic.
Man, the shivers that went up my spine as I turned my heavy sixer switch "on" in hopes of seeing the game screen come up ok. Yes! Then, as I played, the realization that I was playing such a rare item. Ah, so cool.
Later,
-JustJeff