I think it's one of the African-made African meerschaum brands. The Tanganyika pipe company had lots of subbrands--Amboseli, countryman, townsman, Safari, and then there's Kiko and Jambo. I'm sure there are many more. The Jambos I've seen are usually marked Jambo, so my guess is Kiko, since A few of the other brands carry an elephant imprint on the stem, and yours doesn't have it.
I don't think it's one of the English-made African meerschaum pipes brands, though, because those are usually marked Great Britain.