From 1862 until 1867 the last two numbers of the year would be used.
These could be printed or impressed under the circle but like all impressed marks these could be difficult to see when they fill with glaze.
In January 1989 new factory stamps were phased in with N in place of the M and soon afterward black numbers were introduced.
These numbers were replaced with grey ones in August 1989 to reduce their visual impact.
Royal Worcester Marks were first placed on pottery and porcelain in 1862 but it was 1867 before it became common place.
But pieces bearing the crescent mark are rare and usually the provence of specialist collectors.
In 1949 the various asterisk, square, diamond and circle shapes changed to letters and then quickly back to letters and dot sequences.
But you probably won't have any questions becuase our service is so easy to use.In the late 1700s Worcester were among the first to use the Bute shape for teabowls, tea cups and coffee cups.The presence of the crescent mark dates these items to the Dr Wall period and they are all very similar in shape, size and decoration to those made in the same period by Caughley.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.