Reverse
御大典 - Enthronement
昭和三年十壱月 - November 1928
It could be issued by Japanese Red Cross Society since Hōō/Fenghuang https://en.wikipedia.org/wiki/Fenghuang is one of its symbols.
Showa Emperor Enthronement Commemorative Badge with Hōō Phoenix/昭和三年十壱月 御大典記念章
Reverse
御大典 - Enthronement
昭和三年十壱月 - November 1928
It could be issued by Japanese Red Cross Society since Hōō/Fenghuang https://en.wikipedia.org/wiki/Fenghuang is one of its symbols.