This reminds me of https://en.wikipedia.org/wiki/Carved_stone_balls https://en.wikipedia.org/wiki/Carved_stone_balls from the Neolithic era, perhaps these bronz

This reminds me of https://en.wikipedia.org/wiki/Carved_stone_balls https://en.wikipedia.org/wiki/Carved_stone_balls from the Neolithic era, perhaps these bronze pieces are a technical evolution of those objects?