| KORZEC | | Established about 1803. Hard paste. | | Moscow | | Established in 1787. Hard paste. | | ST. PETERSBURG | | Mark in blue. Hard paste. | | ST. PETERSBURG | | Mark of Empress Catherine II. 1762 to 1796. Mark in blue. Hard paste. | | ST. PETERSBURG | | Monogram of Nicholas I. 1825 to 1855. | | ST. PETERSBURG | | Established 1744. Mark in blue. |
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