Rustic Mexican Silver Hoop Earrings Pierced

Pair of rustic sterling silver hoop earrings. They are hollow inside and were made in Mexico. They are not marked. They were acid tested.

They have dents and one has a seam split at the bottom. They are very tarnished. It is advised to leave this warm patina in place and not polish them. 

The shepherd's hook ear wires are replacements by the last owner. They were originally screw backs. She did not keep the original hardware. 

They are 1 3/4" in diameter and 2 1/4" long. Together they weigh 24 grams. Acid tested. C. 1930.  A great find!