mid - third quarter 20th century
lot of 3, includes:
a stamped rectangular example; not marked
height 1/4 inch x length 1-1/8 inches x width 1 inch, weight 5.5 dwt.
a stamped rectangular example, set with a single turquoise cabochon; not marked
height 1/4 inch x length 1 inch x width 7/8 inch, weight 3.7 dwt.
a stamped circular example, set with a single turquoise cabochon; signed JC and marked STERLING on interior
height 1/2 inch x diameter 1-1/2 inches, weight 9.3 dwt.