Oxidized Silver & Brass pendant,
Diameter : About 28 millimeter.
Made originally from a ball bearing(kugellager), now, made from silver and brass.
2 similar parts, one from Sterling Silver and the other Brass, connected and soldered together on a sterling silver 2 mm width curb chain.
Fourth pic : 70 cm chain.
Sterling Silver & Brass Pendant.
Sterling Silver Chain.