As I noted above, I contacted the Whist Counter Museum, only asking if they had any info on the logo. I also checked all their photos and did not see anything close to what I have, though they did have one or two made with ivory, but no MOP that I can find anywhere.

The whole case with the nine denomination MOP round and rectangular chips along with the oversized "Pot" plaque was on eBay and nobody saw it since the title read "Roulette" and the Buy it now price was €299 with a €40 shipping charge ... which took 21 days to arrive from Italy, in a very hard-hit Covid region... and even though there are some chips missing, I think I did well...