All of these are litho tin from 13/16" to 1-3/8" plus one special large 2.25" for Labor Day 1914. A number of the buttons are for street electric railway employees while others represent railway car men, railway clerks, Brotherhood of Railroad Trainmen and others. The three smallest are 13/16" for the years 1920, 1921,1923. Next in size are eight at 7/8" and these span 1922 to 1950. There are five in the 1-1/8" size covering 1919, 1937, 1949, 1965, and 1968. There are three in the 1-3/8" size and these are dated for 1915, 1928, 1938. The largest 2.25" button is for "Labor Day 1914" and has a very unusual silver wire hinged fastener. This has a paint scuff on the right edge but rest in clean. The other items vary between Fine and Exc. A nice group spanning 50 years.