I have received some info. telling me James book says one of rarest chips from S Dakota worth 1,000.00 I'm very lucky, while living in Co. was a member of the Co. Club, great people, I was offered a tube of 5.00 S. Dakota chips and purchased all at face. looking thru I never turned over this chip and never saw the 25.00 value. At our last convention I shared a table with Jim M. and had some misc. items from casinos and had three bins with 200+ chips just thrown in, prices were 1.00 ea. , 2.00 ea. and 5.00 ea. very few people even went thru the bins. Well this week I started to sort into racks by state, and this is when I found this chip. I now remember I might have had a dup. that I sold many years ago? So just call me LUCKY FRED I'm going to give the chip to my favorite grandson.