Beautiful vintage sterling silver pendant with aventurine rotating disc. Aventurine comes in a variety of colors, this one is rust color, similar to carnelian. This may originally have been used as a watch fob. It is hallmarked 925 and 2 other marks I have not been able to decipher.
There are some chips on the edges of the stone, otherwise excellent condition. It measures 2 x 1 3/8 inches.