The first attributed pattern number is 2866 which was first entered into the pattern books around 1923. Pattern numbers at Grays run in sequence, but there are no surviving contemporary pattern books, so working out exactly which patterns were designed by Susie Cooper during her years at Grays is very difficult, especially as there is the possibility that other designers were also working at Grays with her.

Modern research provides us with a few clues as to where the pattern numbers had reached when Susie left Grays in 1929. Andrew Casey’s book, Susie Cooper a Collectors Guide, lists examples of Grays pattern numbers up to 8586, while Ann Eatwell’s book, Susie Cooper Productions, mentions that “By March 1930 Gray’s Pottery pattern numbers had reached 8625, and since Susie Cooper left the firm in October 1929 it can safely be assumed that patterns with higher numbers than this were not of her design”.

It is also worth noting here that any Grays pattern number prefixed by an ‘A’ is not a Susie Cooper design. Most patterns with a factory mark including the words Stoke on Trent are also not Susie Cooper designs, with the exception of some popular patterns which continued in production after Susie left Grays Pottery and some patterns which are clearly re-workings of original Susie Cooper designs.