Read the CC>CC Code of Ethics. It is a violation of the Code of Ethics if you do NOT disclose that these are fantasy chips.

http://www.ccgtcc.com/ethics.htm

Specifically:

3. To base all of my dealings on the highest plane of justice, fairness and morality.

6. Not to sell, exhibit, produce nor advertise counterfeits, copies, reproductions or restrikes of any item unless their nature is clearly indicated as such.

7. To represent casino collectibles as genuine only when to the best of my knowledge and belief, such items are in fact authentic, and when no significant question of their authenticity has been raised.

9. To furnish requested advice to the best of my ability and knowledge, and not to take advantage of superior knowledge on my part to the disadvantage of a less knowledgeable collector.