Smallest enamel on brass lapel stud is 5/8" and the largest convention badge is 3.75" tall. The first ten items are from 1931 and earlier going back to the early 1900s while the second item in the final row is undated and the next pair are from 1951 and 1956. All include the initials or the full names of the two union groups referenced in our title. First item is a celluloid bar pin that once suspended a ribbon. Second is celluloid with brass rim with a pair of brass ears on the back that allowed it to be attached to something. Next is celluloid button a little dark but still with great color. Next is enamel on brass "Ladies Society" pin. Next is Oilers lapel stud. Convention badges in order starting with the second row are Washington 1913, Detroit 1925, San Francisco 1928, Columbus 1931. Next item is brass with a chain at top but not made with a pin. This is for "Ladies Society." Next has rather worn ribbon for a convention in Chicago 1951 and last is for convention in Philadelphia 1956. Many items that were very limited issues.