Size 46 x 39 mm.
Obverse
N.N.A.F.
豫二 for "B Training"
2601 - 1941
reserve
乙種第十一期 - B-Class [Flight Reserve Trainee] 11th class
飛行豫科練習生 - Flight Reserve Trainee Program (飛行予科練習生/Hikō Yoka Renshū-sei) a.k.a. Yokaren (予科練)
卒業記念 - Graduation Commemorative
In 1928, a new program was...
See also https://asiamedals.info/threads/1st...ram-graduation-commemorative-watch-fob.29641/ ; https://asiamedals.info/threads/4th...raduation-commemorative-watch-fob-2600.27017/ ; https://asiamedals.info/threads/6th...ram-graduation-commemorative-watch-fob.27033/ ...
13th class a-class yokaren program watchfob
hikō yoka renshū-sei
japanese aviation school badge
japanese aviation school graduation badge
japanese aviation school graduationwatchfobyokarengraduationcommemorativewatchfobyokaren program 1944 graduationwatchfob
甲種飛行予科練習生卒業記念章
第13期甲種飛行予科練習生卒業記念章
第十三期甲種飛行予科練習生卒業記念章