His Majesty the Emperor of Manchuria Welcoming Commemorative Athletic Tournament Watch Fob/満州国皇帝陛下奉迎記念運動競技大会参加章

Approximately 25 mm in length, approximately 30 mm in width.
Weight approximately 12.5 g.

Reverse

満州國皇帝陛下奉迎 - His Majesty the Emperor of Manchuria Welcoming

記念運動競技大會 - Commemorative Athletic Tournament

参加章 - Participant Badge

昭和十年四月十三日 - April 13, 1935

東京市 - Tokyo City

Original case.

 

Another example.