For your consideration is this wonderful , large and heavy well made pin. I think it is an abstract flower or sun. It is a weighty solid piece at 41.5 grams - considerable weight considering it is a hair over 2 and 1/4 inches across. It has good dimension and nice patina. It came with a lot of modernist jewelry that I purchased. The mark is CW in a cartouche sterling. It has a pin back as well as a loop to be worn as a pendant.
It is in excellent vintage functioning condition. The patina is uneven.