#PL105 - IUE for Mondale Pinback Vintage uncommon 1 3/8" diameter pinback that says IUE (International Union of Electronic, Electrical, Salaried, Machine and Furniture Workers) pinback. Excellent condition. Not a real common one. A lot of people forget that Fritz Mondale was the forty-second Vice President of the United States (1977–1981) under President Jimmy Carter. This pinback supported his unsuccessful run for president in 1984. $1.00