Thus 14 indicates the year 1941 and 23 indicates 1950.
On some patterns, particularly on china, the date has been written in special ink.
This unique gallery, at the Doulton Fine China Nile Street Pottery, Burslem, traces the story of Doulton from its foundation in 1815 and includes the world famous collection of several hundred rare figures.
The gallery is named after Sir Henry Doulton, son of the founder of the company, who was the first potter ever to be knighted for services to ceramic art.
They give a fairly close idea of the dates of the designs.