Hello experts!
I recently bought some Kyffhäuser veteran visor caps. Can anybody help me to a reference book on these items or give me ideas on which models were in use in which time periods? I have googled a little bit, but didn't find much useful info.
Thanks!
I recently bought some Kyffhäuser veteran visor caps. Can anybody help me to a reference book on these items or give me ideas on which models were in use in which time periods? I have googled a little bit, but didn't find much useful info.
Thanks!
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