Nice serrated edge chip. In the late '80's I was at a show in Connecticut; it had poured rain the day before and the show was covered by water and mud. I made it only to a few tents not inundated. In one, a dealer had a huge tin filled with I estimated more than a thousand of these chips (not serrated); I passed as he was only interested in selling the whole lot. Although I've seen these attributed to some clubs, particularly Texas, I've always wondered about attribution.