There are several other bone chapels in Portugal, the most famous being in Evora.
Although the heat is definitely still on, it won't be long before the summer sun begins to set.
There are few recorded dates for the introduction and use of them.
This though can only be a guide to a date - it is not an exact science and some backstamps were used for many, many years.
Learning about styles and shapes can also help date pieces, particularly on the older pieces from the early 1800s when many were not marked.
Robert Copeland carried out the most reliable and detailed research of backstamps used by the company and his 'marks book' is a necessary requirement for the serious collector!
Start of the Spode business to 1833: the company was known as Spode.