Reveriano & Maria Castillo are known by their signature "Reveri". Reveriano apprenticed with Spratling and was later a smith with Hector Aguilar. Sometime in the late 1940s he opened his own workshop and Maria Castillo designed the pieces he created, they later opened a retail shop named "Reveri". These are sterling and copper. Measure 1 1/4 inches. Screwbacks.