Badge in Commemoration of Tokushima Branch Special Inspection by General Yoshinori Shirakawa/帝国在郷軍人會徳島分會 白川大将 視閲記念章

Obverse

特命検閲使 - Special Army Inspector/Censor

特命検閲 - Wikipedia

ja.wikipedia.org

視閲記念 - Inspection Commemorative

Reverse

二五九〇 - 1930
五・一〇 - May 10

帝国在郷軍人會徳島分會 - Tokushima Branch of Imperial Military Reservist Association

Thanks to original paper wrapper we know the inspector name

特命検閲使白川大将 - Special army inspector General Shirakawa

Yoshinori Shirakawa - Wikipedia

en.wikipedia.org

That's funny.
Instead of

視閲記念メダル - Inspection Commemorative Medal

somebody printed

視閲記念メタル - Inspection Commemorative Metal