Antique spherical metal balls

They are made of brass or bronze with intricate cut-out patterns and decorative edging. The surfaces have a patina with traces of red and green, suggesting age and oxidation, which adds to their antique appeal. Each piece has a riveted or welded construction, with sections joined together, and each one features a perforated band around its circumference. The bottoms of each are reinforced with a copper-like material. Given their age, there is signs of wear and is being sold as it.