The green B et G sample is new to me.

The small advertising plaque is a Sunfly and is thick as are their other small samples. This one promotes playing cards.

The three large marbled plaques are quality, three layer material and look to be older. All have silver layer on one side, different colors on the other. The hotstamping is not very good quality though. They are said to come from Italy, but don't know anything else about them. Have a very nice ring to them when tossed on one another, not the clunk like B et G plaques.

I just Googled Saint Vincent and that's a town in Italy. There is currently a casino, casino de la vallee, open since 1947, but not under this name. I guess they might have been visitor souvenirs in the town.