1930 Army Special Large Maneuvers Participation Commemorative Watch Fob/昭和五年十ー月陸軍特別大演習参加記念章

Watch fobs with similar design

1931 https://asiamedals.info/threads/193...-participation-commemorative-watch-fob.24903/
1932 https://asiamedals.info/threads/193...-participation-commemorative-watch-fob.24874/
1936 https://asiamedals.info/threads/193...ers-inspection-commemorative-watch-fob.24876/

Obverse

昭和五年十ー月 - November 1930

第 五 師團 - 5th Division
第 十 師團 - 10th Division

reverse

大元帥陛下御統監 - His Majesty Grand Marshal of the Japanese Empire (Emperor Hirohito)

陸軍特別大演習参加記念章 - Army Special Large Maneuvers Participation Commemorative Badge

 

Another example.

Size 31 x 27.4 mm.