No idea what it is but if you dont get any responses here you may have better luck on the "Freikorps/Weimar Repubic" forum because a lot of Freikorps units used skulls as a symbol
This is a "turn of the century" American Faternal Organization stick pin....(100% sure!).... (Masonic).... nothing to do with the Freikorps, Germany, or whatever....
If you'd shown a good picture of the reverse and complete pin...it would be obviously 1890s/1900 era American.... I've seen many of these over the years.
That said....of interest to "Masonic" Collectors and to "Skull" collectors.... but not really to "Military collectors".....
John G.
Mainemilitaria
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