Which period for this Yombe maternity sculpture

[Prekgaruda]

Hello,

I have this stone Yombe Maternity Sculpture (Ntadi) and am wondering about the time period it could have been created?

Thank you

[Julien]

Stone is incredibly difficult to authenticate and I for sure can't do it, having said that it doesn't look good to me. (same applies as your other post, I know someone who can do it for a small fee).