Ah, well, being (mostly) an honest type, I will say here that I was sent the piece by a collector, so I could see the interior structure and do a decent UV test, as complete examples of Monart are quite difficult to get a UV
I also used the piece as a template to draw circumference. It produced a perfect circle with a diameter of 29.5 cm / 11 5/8 inches.
It was the collector who unfortunately dropped the large bowl / dish :!:
But yes, Frank, with my warped sense of humour, I am tempted by the hint-at-Balmoral card :lol: