They appealed to customers who had a more traditional, even old-fashioned taste, and were catered for alongside new customers demanding 'modern' designs of topographical, pastoral or botanical subjects which were coming into vogue in the early 1800s.
[It has been pointed out the this does not apply in all instances - as small items such as thimbles do not have the words MADE IN ENGLAND on them. In general Jasper pieces produced before 1860 were produced before 1826 except for black, blue, green and dipped pieces and solid white jasper which were resumed in 1844.There is an illustration here too of Willow pattern in pink on Chelsea shape with pattern number 1/2134 first recorded in about 1880.At the end of this blog there is also an illustration of a tissue 'pull' from a copper plate engraved with Willow pattern.Commencing in 1929 the year mark is replaced by the last two digits of the year, 30 standing for 1930. In 1871 Wedgwood adopted pattern numbers with the code letter prefixes.Some assistance in resolving the ambiguity in the two series is provided by the month letter. After 1891 the word ENGLAND is added to the WEDGWOOD mark continuing until 1908 when the words MADE IN ENGLAND replace it in all cases.
In fact Christmas thimbles dated 1990 still use WEDGWOOD ENGLAND] Before the advent of the dating system in 1860 one must look to other clues to date pieces described as marked WEDGWOOD only. Solid Black Jasper was produced between 1778 and about 1826; the white body dipped in black between 17 with production resumed in 1844 and continuing to the moderm era.