Vintage Navajo Sterling Silver Dome Ball Screw-back Earrings

Lovely Vintage Mid Century Earrings with Sterling Silver in abundance: a large round domed center ball edged with round silver drops. Backs are Screw-ons in good working order with all threads intact. Earrings measure 1-3/8" with a weight of 8.6g for the pair. Backs are inscribed with a very faint number - 79. You will see from the photo nuanced differences in the placement of the screws to the base, which attest to the handmade nature of these pieces. The aesthetics when worn remain the same. Nice vintage old pawn condition with patina consistent of pieces of their nature and time.