Badge with a similar design https://asiamedals.info/threads/maritime-self-defense-force-1st-fleet-air-wing-badge-1.23332/
1st variation of obverse.
2nd variation of obverse.
Reverse
航空教育集団- Air Training Command/Educational Air Corps
Another example.
Original case.
航空教育集団- Air Training Command/Educational Air Corps
海上自衛隊 - Maritime Self-Defense Force
Badges were manufactured by Nagawa workshop in Tokyo
1st variation of obverse.
2nd variation of obverse.
Reverse
航空教育集団- Air Training Command/Educational Air Corps
航空教育集団 - Wikipedia
ja.wikipedia.org
Another example.
Original case.
航空教育集団- Air Training Command/Educational Air Corps
海上自衛隊 - Maritime Self-Defense Force
Badges were manufactured by Nagawa workshop in Tokyo
Badges, watch fobs and plaquettes made by Nagawa Medal Works/名川徽章製作所
Founded in 1927 and still active today. Standard workshop labels.
asiamedals.info