~~~ for this one piece that the seller included.

The set came from Italy and took a month and a day to get here... and I have never seen a MOP marker.

The curator of the Whist Museum said he never saw one, either, and he said the monogram is the owner's, since he knows it's not any known manufacturer's monogram.

Maybe I'll just included it in the next P&P sale with stuff I need to dump.