never heard of it before I started looking up some stuff.
So you can update the chipguide:
Casino Landgraaf
Moltweg 82
Landgraaf 6371 BX
Nederland
Status: open
Phone: +31 653527117
Facebook: Kienen Casino Landgraaf
Tried to talk about the history but the owner wasn't really open for a conversation.
Got a timeperiod on the chips and plaques by messenger.

Kienen, a kind of Bingo but different.
https://nl.wikipedia.org/wiki/Kienen
Not allowed to play for money in Belgium.

Jo from Belgium