Caption on reverse [translation]: "(Moscow) New ambassador Tamekichi Ota arrived in Moscow on the 23rd. He visited Mr. Karinin, Chairman of the People's Commissar, at the official residence. Ota presented his credentials to Mr. Karinin. In the photograph (from left) is Mr. Litvinov, Chairman of the People's Commissar for Foreign Affairs, a member of the G.E.G. …