See also https://asiamedals.info/threads/1937-sen-man-visit-commemorative-badge.25830/;
Obverse
Sen Man /鮮満/ - Korea and Manchuria
reverse
朝日鮮満旅行 - Asahi Trip to Korea and Manchuria
/Asahi Shimbun (朝日新聞, lit. "morning sun newspaper") is one of the four largest newspapers in Japan...
1929 sen-man visit commemorative badge
1929年朝日鮮満旅行章
asahi shimbun badges and watch fobs
japanese badge
korea under japanese rule badge
manchuria badge
sen-man badge
朝日鮮満旅行章