These earrings are somewhat older, probably 20-40 years old. They are marked 925 for sterling silver. There is no etching on the outer loops, but there is some slight etching on the musical clefs. They are the earrings pictured in the lower right of the photo below.
Please be aware that these earrings are handmade. The ear wire is somewhat larger than for commercially produced examples, and there is a handmade closure hook at the end of the ear wire. For these reasons, a somewhat larger ear pierce is necessary.