... "SBM" or a Societe de Bains de Mer or even their logo on any component. Thus my reason for suggesting it wasn't actually used at an SBM run operation in Monaco.

There have been American-style chips and metal tokens made w/o the SBM logo... and, thoug legal tender in any SBM property at the time... they were not actually used in gamblng. Such as Franklin Mint material.