A very interesting demi parure from the 1950's, in 14K yellow gold set with pearls. The brooch and earrings are made from two discs which actually move around, not in a circle but more like rotate, or swivel. I have never seen another design like this before, very unique. There is a patent number, 2583988, on the earrings which was issued in 1952 to Frederick Ballou of B. A. Ballou & Co of Providence RI. Ballou & Co was known for very high quality jewelry. The brooch and earrings are all stamped 14K. The earrings have the patent number and an additional 14K stamp on the clipbacks. The set is in fantastic condition and guaranteed to be as described. Brooch is 1 1/2" by 1 1/8". The earrings are 1" by 3/4". The set weighs approx. 22.26 grams.