Here is one I have never seen before even though 2 Horseshoe employees told me that they have seen it frequently. Notice that the red color is missing from the Horseshoe logo and denomination. I am surprised that this has been in play for years with out one of us spotting it. At least I now have one in my collection.

For those keeping track there emay now be 3 of the Horseshoe $2.50/$5 error chips. My contact there said he sold one on Ebay for several hundred dollars recently.