Powder Horn - possibly decorative Folk Art

Not sure if this is a real powder horn or a decorative item influenced by one. It's wooden, with what appears to be mother of pearl accents - the shiny parts of the photograph. The plug is also wooden, with a double sided face either an African or Native American looking face. 

 

It stands very sturdy and flat on the base, as if someone designed it that way.

 

Thanks so much!