Dating royal albert backstamps
There is an old rule of thumb for dating Doulton figurines; where you add 27 to the small and hardly visable number to the right of the Doulton backstamp. That is not to say that your item was produced in that year but simply that the year indicated is the earliest the piece could have been produced.
The Beswick and Royal Albert Backstamps used on Beatrix Potter Figures have changed many times since 1948 and they can be useful to aid in dating a particular piece.
Derby porcelain also included a date cypher with most base marks produced at the Osmaston Road factory.