Smallest are .75" and largest is 3". Most range between 1902 and the 1930s with the four at the bottom of the photo somewhat more recent. While they display relatively well all have significant damage mostly in the form of celluloid crazing but very little in the way of age stain. First button is a nice early labor union while next two from 1902 and 1905 show streetcars in Columbus Ohio. Most of these are quite rare pieces that still display well.