I found the casino used serie in the hands of a Dutch collector.
So far known to me:
* 5000 CG 254845
* 10000 not on CG
* 25000 CG 254846
* 50000 CG 254847
* 100000 CG 254848
* 100000 CG 298341 (pink version)

I don't have the white 5000 in collection but have seen a picture of the 5000 and 100000 together and it the white of the 100000 is different.
Have you ever heard of a color that faded? Maybe that was the case with the used plaques and they were all pink in the beginning.
Just a thought.

Jo