Bingo!
Ah! I found a thread on GCA which makes the link between "M in diamond" and J.C. Maedicke.
This photo of a button box which contained the "M in diamond" buttons, said to have come originally from a WAF member. I hope it's okay to repost here.
So these marks apparently appear on KM summer breast eagles, Heer gorgets, Krim shields and KM buttons at least, and the Maedicke RZM M5 (Uniformeneffekten) code is M5/187
Ah! I found a thread on GCA which makes the link between "M in diamond" and J.C. Maedicke.
This photo of a button box which contained the "M in diamond" buttons, said to have come originally from a WAF member. I hope it's okay to repost here.
So these marks apparently appear on KM summer breast eagles, Heer gorgets, Krim shields and KM buttons at least, and the Maedicke RZM M5 (Uniformeneffekten) code is M5/187
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