17th National Secondary School Sumo Tournament Official's Badge/第十七回全国中等学校相撲大会役員章

Silver watch fob in the form of gunbai /軍配/ - umpire's fan in sumo wrestling.

Reverse

第十七回 - 17th

全国中等学校相撲大會 - National Secondary School Sumo Tournament

役員章 - Official's Badge

大阪毎日新聞社 - Osaka Mainichi Shimbun https://asiamedals.info/threads/osaka-mainichi-shimbun-badges-and-watch-fobs.24611

2595 = 1935

Marked 純銀 - pure silver and Ikoma workshop mark https://asiamedals.info/threads/sunday-mainichi-cufflinks-sandee-kafusubotan.24370/

Original case.

役員章 - Official's Badge

大阪毎日新聞社 - Osaka Mainichi Shimbun