I have asked at the cage at least 10 times if anyone has turned one in but always had negative reply. I have no idea how many were issued but it was not a lot. Many may have been given away at the race. Only sets I have are the one I have in my collection and one partial set I found from a local about 5 years ago. The partial set I sold. I was stooooopid enough to not pick up a set of the $25 chips when I got my $5 set.