These are fine bronze bezel Cups, they are very high quality. Very unusual, you will have to find your own use for them. These originally were used as a base for being covered with fine rhinestones and some were also used as resin cups. These were cut with a very special mold and formed all in one pass, a tad complicated. There is only 1 piece of copper here, no solder. These are wonderful for doing Cloisonne, Resin, Epoxy, Textiles, whatever you can come up with. We have annealed these with our torch and water quenched them to clean them, we also put these in acid to clean off any oxides that formed. I feel these are a novel product, unknown to the trade, I have never seen 100% bronze Bezel Cups anywhere.
PB-017, Type of Metal - Copper, Brass, Bronze or Nickel Silver, Grade of Metal - First Grade, Gauge of Metal - 30 Gauge, Measurement - 31mm OD, 1.8mm tall, Quantity - 4,