So far I only see two chips described as you have.
both have "card room " hot stamps
One is a .50 cent denomination TCR V5821 Brown color C&J H&C has an R rating ($250-299)
The other is a $1 denomination TCR N2889 Purple
color H&C with a D rating ($10-14)
would there be anything more specific as far
as denominations or exactly what the hot stamp
says??