Earrings are cut and sanded, for smoothness, from the 2 tins in the images. Both vintage tins.
Antiqued brass drop, 6mm round with beaded edge and 5mm round bezel cup setting with a small cut piece of tin glued inside. 
Earring wires are antique gold-plated brass, 16mm flat fishhook with open loop, 21 gauge.  Each pair come with silicone clear earring backs. 
Earrings have been treated with a museum grade wax to protect and enhance, called Renaissance.
Some Tins are Vintage and worn and add a Unique element to the Design.