Circa 1970's. 2 3/4" by 1 1/4". Marked (c)JJ. Smooth brass metal finish.
Mom, being a Pisces had many fish pins. She refer to this one as the patchwork pin. The center is made up of small odd shape patches with a different design on each. The fins are wave like. The tail is curly. Its a real cutie. The bar of the clasp is a little bent (from use) but still works great.