Japanese three-wheeled motorcycle

[David DeWeese]

Hi,
Am posting this for a friend who has recently aquired a Japanese three-wheeled motorcycle, and is looking for any information to help in restoring it.
Story is that it was brought back from Guadalcanal, sold at some point, and then sat behind a gas station in Oklahoma for decades.
The data plate is missing, so we don't even know the manufacturer.
Am posting this on several sites in hope that someone might have information or photos on one of these.
Have found only one photo with no caption.
Any help would be greatly appreciated!
Thanks, David