There appears to be some mis-information on those two auctions. Partial info from each shows:

Deadwood Stage - This casino has been closed since the late 1980's early 90's.

Dakota Frontier - This casino closed in the early 90's

BUT... The Official U.S. Casino Chip Guide shows that 'Deadwood Stage' opened in 2003.

Their chips show "Deadwood Stage" on one side and "Dakota Frontier" on the reverse.

Link to the chips: http://dakotachips.webs.com/dakotafrontier.htm

Dakota Frontier & Deadwood Stage, 670-672 Main Street, Deadwood, South Dakota 57732-1124