http://www.potsaa.com/transferware-plate/

Staffordshire pottery cleaning?
What is the best method of cleaning Staffordshire pottery? I have several transferware plates that have some minor heavy staining / discoloration. I do not want to pay for a professional to clean, if there is an easy way to do it myself. Suggestions? And are there sites on the subject that offer free advice on cleaning ancient pottery?
http://www.pottery-english.com/Articles/Useful_Guides/The_care_of_pottery_and_china/
19th Century Transferware Collections : Tips for Repairing Transferware