I guess comming up with any records on dice manufacture is a lost cause if they are shredding it all. I did try emailing several casinos to ask about the diferent styles of dice they used in the past and that I was doing research for a collectors book. Most gave me an outright "get lost" a few answered with a contact person who then gave me a polite "get lost". Are they all so security paranoid that they will not even cough up info on obsolete stuff 10 or more years old??