Wedgwood jasperware can often be dated by the style of potters marks, although there are exceptions to the rules: Before 1860: Mark is Wedgwood. Usually accompanied by other potter markings and a single letter. From 1860 to 1929: A three-letter mark represents in order, the month, the potter, and the year.

When was Jasperware made?

1775 Jasperware, type of fine-grained, unglazed stoneware introduced by the English potter Josiah Wedgwood in 1775 as the result of a long series of experiments aimed at discovering the techniques of porcelain manufacture.

How do you date Wedgwood marks?

The standard impress mark WEDGWOOD appears on ceramics that also have a three-letter code. Within the three-letter code, the third letter is associated with a year. The table below shows the details. These impressed markings first appeared in 1860 with the year letter O.