on the outside of the package if you have to send it either insured or internationally.
I always write down "gaming piece" or "game token" or even "game pog". You aren't lying and you also are not telling everyone who reads this package that there is something of value inside.
Most sellers are intelligent when mailing items,but sometimes when I see packages saying that there are casino chips inside(especially from Nevada),I shake my head,as I can just imagine what is going through the mind of a larcenist at the post office,if they read this. It would be a great invitation to steal it as they would know that it would be instant money inside.
I could be wrong but I honestly think that this could be the reason that so many chips do not make it to their destination