Photos courtesy of the owner.
Obverse
銃剣道 / Jūkendō / martial art using the bayonet literally "way of bayonet"
法大 -most likely abbreviation (for example it could be read as Hosei University)
1st type "plain reverse, numbered".
No.244 from 1942.
Photos courtesy of the owner.
Obverse
銃剣道 - Jūkendō
Reverse
above
銃剣道学徒指導者適任徽章 – Badge of Qualified Student Instructor
on the right
昭和十七年度 – 1942
on the left
第一四四号 - No. 144
144 is punched.
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...