A CD122 glass telephone insulator (made by Hemingray, Whitall Tatum, Armstrong) with an attached pin indicating Registered Nurse (RN) status. The pin is enameled over metal and is firmly attached to the glass insulator. These insulators were typically manufactured in the 1930s - 1950s..
These make great gifts for the Registered Nurse in your life. A wonderful desks accessory, paperweight, or display case or shelf item.