Vintage Early Silver Screw Back Mexico Earrings

Old silver Mexican earrings from the 1930s or 1940s . Shaped as a small hoop or crescent moon, the earrings have domes and swirls of silver wire as decoration on a darkened background. Marked on back "silver" and "Mexico". In good vintage condition.  the screw back mechanism works well. 

• Length is 3.5 cm ( 1/4")
• Width is 2.1 cm (7/8")
• Weight 5.2 grams