Vintage handmade silver bangle bracelet with protecting hand

Vintage handmade bangle bracelet. Has a stamp that is quite worn, I can't read it. Serrated outer surface with what looks like Hamsa protecting hand / protection talisman. In pre-loved condition with wear, as pictured. Not sure what the metal is, could be coin silver (less than 925 purity), or some kind of silver color metal alloy. Fits wrist sizes S and M. Shaped like an oval, measures 6.6 cm x 6.3 cm. Soldered and polished at the seam, which is visible on the inner and outer sides.