These two fellows appear in a photo of the Jaluit clinic dated from 1932. The famous photo has been dated to both 1932 and 1935 in the National Diet Library. I know, it's insane that 2 books published a few years apart would contain the same photo. Has that ever happened?
They both wear similar clothing, and the guy in the left, with the infamous widow's peak, has a jaunty, casual way of leaning against something for photos that is sometimes mistaken for a knee injury. The guy on the dock resembles the guy by the clinic much mre than he resembles Noonan, and we can place both the dock guy and the clinic guy in Jabor at about the same time....unlike Noonan.
Perhaps someone visited in 1932 and took more than one photo.
I will let you decide.