A few weeks ago I found a couple of papers by Daniel Berger, a german researcher who has studied a large group of 13th century stone moulds used to cast pewter objects. Unfortunately they were in German, but I could get an idea of what they said. The photographs too were very useful, and showed stone moulds of extraordinary complexity, much more so than any known so far in Britain.
Fortunately he’s put much of his work online, including his PhD thesis:
Click here to see the list.
Anyone interested in pewter badges and related objects should read them, or at least copy and paste into google scholar to get an idea of what he is writing about.