See https://asiamedals.info/threads/1933-tokyo-university-of-commerce-hitotsubashi-special-committee-watch-fob-1933.27644/
Size 33×27 mm.
Weight 16 g.
Reverse
Hitotsubashi University's symbol /obviously inspired by Mercury, Roman mythology's god of commerce/.
一橋専門部會 - Hitotsubashi Special...