Here is a group of eight mixed brass US Army military buttons, vintage to the WWII era. Four are 1" wide, three are 5/8" wide, and one is 3/4" wide. They are marked on the backs with the names of different manufacturers, most of which I can't read. There is one large and small marked Waterbury, the medium is marked Waterbury, too. The others appear to be marked N. S. Meyer.
US Military Brass Eagle Buttons Large Small Group