Assuming that there is an unused rack of dolphin chips at the Mirage that is not on the table, what is to keep the house from suddenly putting them on the table. Mirage did that with the Tiger boys. I happened to be playing at the Mirage when the chips were added and several of the local dealers had no advance notice (beyond the fact that the Gaming Commission would have had to have approved the chip). The point I am trying to make in this belabored message is that if some how a chip or two of an undistributed rack got loose and into a collector's hands there wouldn't be any guarantee would there that this is an obsolete chip?