I believe that to be true as it was told to me by Miguel Carlo of Cabo Rojo, PR. Miguel (Mike) is probably the foremost authority, historian & collector of PR casinos & chips. I have a photocopy from him of all of his "CA" ivory chips.

I have 20 different MOP, beautiful serial numbered chips, including #1 and #200. They have almost the same "CA" engraving. I believe that my MOP's may be from Casino de Arecibo also, but Mike says that he has never seen any chips from there besides the ivories.