The curator of the counter museum said he never saw one.

The housing is IVORY and the tabs are Mother-of-Pearl.

The monogram, of course; is that of the Bezique MOP Chip set owner. The set had 9 denominations; round and rectangular shapes of which carved uniface denominations from 1 to 1000.

I bought in from Italy when Covid-19 was full-blown and it was in transport for over 30 days.