Getting undrilled dice from AC that have actualy seen the inside of a casino is hard. They get drilled by law after use. As long as the drilling does not damage the logo, drilled casino dice are still collectable. There is a big possibility that undrilled AC dice are factory cancels or have never seen the casino floor unless you get them from a person who works the casinos and can vouch thatthe dice did see the inside of the place.