See also https://asiamedals.info/threads/army-large-special-maneuvers-osaka-city-committee-members-badge.29093/ ; https://asiamedals.info/threads/army-large-special-maneuvers-committee-members-badge.30568/.
Reverse is marked 花十三 - Hanajūsan/Hana Jūzō [13 flowers] workshop.
Even with...
