This is an antique Daughters of the Revolution membership medal. The medal is named to a “Caroline L Thompson” who was a member of the Long Island chapter.
The medal and bar are both made of sterling silver by the J.E. Caldwell company. The ribbon shows wear due to its age, and the medal is tarnished. It looks that the clasp on the back of the medal was filed off for some reason, so the pin on the bottom cannot be latched (the pin on the top bar works great).