Fred Kelly (writer and artist)
Released 12/1945 - 04/1946
From Wow Comics No. 28 and 30 with 6 black & white pages each. The head of a powerful diamond empire hires Guy Powers to travel to Africa to find out why the shipments of diamonds has been smaller than normal. Powers lands, literally and figuratively, in the middle of a coup in the country with the largest mine.
Here are the pages I have of it.