I don't know if its period or recent, that being said one company Godat & Sohn did produce a Bavarian pilot badge during the war by using the same standard die for the badge but eliminating the imperial crown and replacing it with a Bavarian crown which was applied separately. That variation is exactly the same as this and the pin and hinge is one style that represents that that Godat & Sohn used. As stated earlier in this thread WW1 Imperial flight badges is a mine field that one should tread lightly.
Terry
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