Dating spode phildelphia dating

It being easier and cheaper to put an extra dot on existing copper plates than make new ones.This continued until the dots became un-manageable and then Worcester marks changed to different shapes, all printed beneath the circle.Rather than use names the Worcester factory relied on pattern numbers which were hand written in script, rather than stamped.Records of Worcester tableware marks were only published for the more expensive hand painted patterns which appeared randomly throughout the numbering sequence.

Many are beautiful works of art in their own right; taken together, their importance rests in part in their completeness, but also as a historic document of changing design styles over two centuries.

In 1949 the various asterisk, square, diamond and circle shapes changed to letters and then quickly back to letters and dot sequences.

These continued until 1963 but their use was rather inconsistent and a great many pieces produced at this time are un-dated.

1916 – * under circle 1917 – * plus – * plus 2 dots 1919 – * plus 3 dots 1920 – * plus 4 dots 1921 – * plus 5 dots 1922 – * plus 6 dots 1923 – * plus 7 dots 1924 – * plus 8 dots 1925 – * plus 9 dots 1926 – * plus 10 dots 1927 – * plus 11 dots 1928 – open square 1929 – open diamond 1930 – division sign1931 – 2 linked circles 1932 – 3 linked circles 1933 – 3 circles – 3 circles 2 dots 1935 – 3 circles 3 dots 1936 – 3 circles 4 dots 1937 – 3 circles 5 dots 1938 – 3 circles 6 dots 1939 – 3 circles 7 dots 1940 – 3 circles 8 dots 1941 – 3 circles 9 dots Worcester continued this sequence until 1941 when there were 9 dots and the triple circle mark.

From c1942 the vast majority of factory stamps were printed in black with the following codes below the mark.

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