Neibelungen, thanks for the explanation. If I understand the more modern process correctly it is the thickness of the metal which allows the front to look like it should and what happens on the reverse not to effect the front.
Would the Suffolk badge be issued flat and then curved?
What are the sweat holes? I want to say it's a term related to manufacture.
Thanks for all the comments. It's always nice to cross a couple of names off the list.
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