Ankhesenamun - thank you for your input. There have been some people who saw the carving and thought it might be of African origin, possibly representing some kind of ape, due to the prominent brow ridge and the thin lips. I have not ruled out this possibility. However, the way the nose was represented seems more humanlike than apelike, and the stylistic features of the carving - the scalloped markings framing the face and the striations apparently representing hair on the head - do seem to echo the stylistic elements of many carved cedar masks from certain Pacific Northwest tribes.
Nevertheless, I am very curious about what you said about your ivory ring with a similar image, and I will follow up on the Bujumbura lead you provided. By any chance do you still have the ring? I would love to see the image on it.
Thank you! - Tony Plescia