Last Updated: Feb 09, 2017 Views: 8
Our curatorial department may be able to help you with your identification question. You can contact them through their online form (http://www.cmog.org/glass-questions).
Have you already tried contacting the Carder Steuben Club? I've always found them a very knowledgeable group of collectors! Contact information is available on their website: www.cardersteubenclub.org/.
I do see a similar covered bowl (shape #6566) with a different shape for the stopper and foot and a very different cutting pattern listed on the Carder Steuben website and in several books on Corning cut glass.