Earrings are cut and sanded, for smoothness, from the tins shown. An Antiqued brass drop, 9mm round with beaded edge and 8mm round bezel cup setting dangles in the middle with a piece of vintage tin glued inside. I do not have a picture of that tin. I have used jewelers glue.
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 of the tins are vintage and have been lovingly used over decades. Therefore, there may be fine scratches or imperfections.