Reverse
昭和十七年十月十一日 - October 11, 1942
總裁宮殿下 - His Imperial Highness (most likely by Prince Nashimoto https://asiamedals.info/threads/gre...highest-inspection-commemorative-badge.24956/)
御視閲記念 - Highest Inspection Commemorative
大日本警防協會 - Dai Nippon Keibō Kyōkai /Greater Japan Civil Defense Association/
福井縣支部 - Fukui Prefecture Branch
Manufacturer mark
吉村謹製 - Made by Yoshimura