Given the type of chip, I would say it is highly unlikely it is very old (probably less than 10 years). I don't believe chips like that have been made for too long. It has no casino name on it, so it is what we refer to as a generic. This is supported by the extremely high denomination. The oyster with a pearl in it does not match any licensed casino I know about. Maybe someone else does? It could have been used as a tournament chip in a home game or possibly in a recent underground card club. I have never seen one like it, personally, so those are my best guesses. Maybe someone can give you more definitive responses.

I wish you the best of luck in finding out more about it.

Michael Siskin