Salaams ~ The Omani Terrs has its origins in this form and hide from various creatures was sought for its construction in the regional Hub of Zanzibar viz; Hippo, Rhino, Water Buffalo and possibly Whale. The shape and size looks identical however can you post the sizes please?
I agree with Iain about the beautiful design to the lower item with crosses and clusters of archways in the religious style common to the region. Crosses have many concepts and candle light is one ... though it is also a geometric structure as is the dot at the centre of the arch clusters meaning universal centre...
However, I'm not wishing to read to much into the artistic style rather to compare the shield with the Buckler of Oman and to point to its very
African form.
Regards,
Ibrahiim al Balooshi.