Mike,
Suggestion: photo the strikes front and back and post on this site. Photo each group of say 6 x 6 (36 strikes) on one side and then turn them over in place and then photo the other side. Thats the quickest way to communicate your inventory. Don't photo the ones you do not want to sell. I seriously doubt any casino will redeem any strikes if the casino has discontinued its strike program. Some $20 and $40 strikes have a thin gold clading.

This should get you started.

George L