Overall: 3 in. ( 7.6 cm )
On rim: Bastian Bros., Rochester, N.Y.
Pin-back union button; inscribed "I WAS THERE/SOLIDARITY/DAY/SEPTEMBER 19, 1981/MACHINISTS UNION"; depicts two hands shaking.
Gift of Marilyn and Luther Carpenter
Due to ongoing research, information about this object is subject to change.