Nicely designed badge.
Obverse
鮮満 - Sen-Man (as Korea and Manchuria were collectively known)
視察記念 - Visit Commemorative
reverse
昭和十二年五月 - May 1937
主催 - Organized [by]
ジャパン・ツーリスト・ビューロー - Japan Tourist Bureau
日本旅行協會 - Japan Travel Agency
See also related badges
1929 Sen-Man Visit Commemorative Badge/1929年朝日鮮満旅行章
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...
asiamedals.info
Tokyo Nichi Nichi Shimbun Sen-Man-Shi Tourist Group Badge/鮮満支視察團 東京日日新聞章
See also https://asiamedals.info/threads/manchukuo-sightseeing-mainichi-shimbun-travel-association-badge.24239/ Size 33 mm. 鮮満支 - Sen-Man-Shi China [Korea-Manchuria-China] Following the establishment of the South Manchuria Railway company in 1906 and the annexation of Korea by Japan in...
asiamedals.info
Chosen-Manetsu Railways Visiting Group Badge/鮮満案内所 鮮満現察團章
See also https://asiamedals.info/threads/1930-chosen-manetsu-railways-travel-commemorative-badge.25241/ Obverse Emblems of Manetsu (South Manchuria Railway) and Chosen (Korean) Government Railway. 鮮満現察團 - Chosen-Manetsu Railways Visiting Group reverse 鮮満案内所 - Chosen-Manetsu Information...
asiamedals.info
1930 Chosen-Manetsu Railways Travel Commemorative Badge/昭和五年六月満鮮旅行記念章
See also https://asiamedals.info/threads/chosen-manetsu-railways-visiting-group-badge.24385/ Reverse 満鮮旅行記念 - Chosen-Manetsu Travel Commemorative 昭和五年六月 - June 1930
asiamedals.info
Manchukuo Sightseeing Mainichi Shimbun Travel Association Badge/満州国視察大毎旅行会章
See also https://asiamedals.info/threads/tokyo-nichi-nichi-shimbun-sen-man-shi-tourist-group-badge.23869/ Obverse 満州國視察大毎旅行會 - Manchukuo Sightseeing Osaka Mainichi Shimbun Travel Association In the center emblem of Mainichi Shimbun newspaper https://en.wikipedia.org/wiki/Mainichi_Shimbun
asiamedals.info