looking for an expert on Imperial Japanese Navy

Hello,
Trying to find out clearly if this dated small chop (IJN) inside a French passport is stamped by the Imperial Japanese Navy inspection at one of the docks in occupied China during the war…the holder, possibly French collaborationist living in both Harbin and Shanghai, who frequently crossed the borders by boat either from Qingdao port or Tianjin to reach southern Manchuria at Dalian, Shan Hai Guan or Wa Fang Dian and if in one of those 3 ports the Imperial Japanese Navy (IJN) stamped the passport here on 1941 July 19th…


Click to enlarge the picture


 

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