For your consideration is this interesting pin. Resembling a music note with a two balls and a center bar and wire work. This piece came in a lot of high end lot of modernistic jewelry from a private collection that included Betty Cooke. Unsigned and unmarked , it has tested as sterling silver. Ms Cooke did do some unsigned work but I have no way to know if this is hers. It has nice patina and age.
It measures 2 and 3/4 inches by 1 and 1/8 inches across the widest points so it is a nice size.
It is in great fully functioning condition.