OH, you mean reversed 'inserts', not inlays. You will find this with any paul-son chip that has different obverse/reverse. There should be about half with each color sequence. Most don't call these varieties, but I guess you could collect them.

I believe Gene posted recently that Chipco will align all the insert sequences on their chips if you ask. I don't think Paul-son has the capability to do this, not that many casinos would ask anyway.