Hi all! I have a dark blue William Adams Historical Staffordshire cup plate, c. 1820-1825. It's very dark and I can't make out the pattern. My understanding is that William Adams only produced two Historical Staffordshire views/patterns, the Seal of the United States and Mitchell & Freeman's China and Glass Warehouse, Chatham Street, Boston. The cup plate measures 4" across. Thanks for having a look and appreciate your thoughts.

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