This could be the set you are talking about.
I have 11 different "Year Of The" chips from the GCC.
1994, 95, 96, 97, 98. They made 2 different in 4 years and 3 different in 1994.
Real nice chips.
They use different chips in the poker room than they do on the table games. hence 2 different. Can't answer why 3 different in 94 (dogs). I will be returning to Vancouver next summer for a poker cruise to Alaska. GCC is real chip friendly. They even sold me Sic-Bo chips from the tables.

Jim Smith has all of the GCC chips. Chipchamber.com
He is in the middle of a move to LV, so best to wait a little while before contacting him.