Small African (?) spearheads for ID

[Araña_del_Sol]

Hi all,

I recently acquired a pair of spearheads with a rather distinctive look. They both have inlaid brass and incised patterns that remind me of common motifs in West Africa but their shape is odd. Any help identifying them would be appreciated.

Both are about 24.8cm (9.75 inches) in length.

- ADS