There were actually two Sahara $25's that sold for big bucks at the convention. The first one was a $25 Sahara sold for $16,000 to me and was the unknown 7th issue $25 that had never been seen before. The $1 and $5 were listed but no $25 had been seen before. The $25 Sahara that sold for $70,000 was the 4th issue and was near mint with no problems. The same chip is in the Platinum collection but in lesser shape. I also bought a Las Vegas Club $25 that was not seen before and matches the 12th issue but only has lavendar inserts instead of the lavendar and green inserts shown in James' book.