For your consideration are these long and beautiful onyx dangle earrings. Each earring has 9 graduated sterling silver drops and the earrings have a nice modernistic look. While the only marks are Sterling and an upside down AIS, I am familiar with AIS jeweler and it usually is comprised of this stone and dangle drop design and they are often marked Mexico also. I do believe they are vintage and they have a nice patina.
These are quite large measuring 2 and 3/4 inches top to bottom by 1 inch across the circles.
They are in excellent condition. I added the newer sterling silver ear nuts. Laid flat for picture taking, they hang beautifully when worn.