Dai Nippon Association for Promotion of Jukendo was established in 1941 and was dissolved in 1945.
After the war it was re-established in 1956 under the name All Japan Jukendo Federation.
https://ja.wikipedia.org/wiki/全日本銃剣道連盟
http://www.jukendo.info/jukendo-tankendo/jukendo
1st variant of membership badge ("plain reverse").
1st stamp variation.
Obverse
銃剣道 / Jūkendō / martial art using the bayonet literally "way of bayonet"
大日本銃剣道振興會 - Greater Japan /Dai Nippon/ Jukendo Promotion Association
會員章 - Membership Badge
On the back of original paper wrapper.
is the name of the manufacturer
小林メダル製作所 - Kobayashi Medal Mfg. Co., Ltd. https://asiamedals.info/threads/badges-and-watch-fobs-of-kobayashi-medal-mfg-co-ltd-medaru.22413/
Another example of 1st stamp variation badge.
After the war it was re-established in 1956 under the name All Japan Jukendo Federation.
https://ja.wikipedia.org/wiki/全日本銃剣道連盟
http://www.jukendo.info/jukendo-tankendo/jukendo
1st variant of membership badge ("plain reverse").
1st stamp variation.
Obverse
銃剣道 / Jūkendō / martial art using the bayonet literally "way of bayonet"
大日本銃剣道振興會 - Greater Japan /Dai Nippon/ Jukendo Promotion Association
會員章 - Membership Badge
On the back of original paper wrapper.
is the name of the manufacturer
小林メダル製作所 - Kobayashi Medal Mfg. Co., Ltd. https://asiamedals.info/threads/badges-and-watch-fobs-of-kobayashi-medal-mfg-co-ltd-medaru.22413/
Another example of 1st stamp variation badge.