野砲三第五十八回創立記念章

Photo courtesy of the owner. Reverse 第五十八回創立記念 - 58th Anniversary of the Founding 野砲三 - 3rd Field Artillery Regiment was established in Meiji 11 [1878], so the badge dates to 1936. This aligns perfectly with the regiment's order of battle since it was garrisoned in Manchukuo from Showa 9...