Jim; One factor that the Campiglia-Wells Rarity Scale does not address is denomination (interpreted;... demand). High denomination chips, like high denomination coins .... (when compared to their lower denomination counterparts) can't be judged by how many are "out there". A $50 gold piece with "only" 100 known, would not bring the same price as a $1 silver dollar of which only a hundred were known ... simply because there are more collectors of $1 silver dollars than there are $50 gold piece collectors. Similarly, a $100 millenium chip that only 100 were made, would not bring the same price that a $5 millenium chip of a 100 made would bring. The $5 chip could be considered "rare" or maybe "scarce", but not necessarily the same number of $100 chips would be considered "rare" or scarce, simply because the demand is not as great as is the lower denomination. This is why the "porn chips" became an instant "rarity". I don't think the same phenomenon would have occured if the porn star chips were $100's. What is your opinion?