Congratulations on a fine and uncommon find, RichG! It's a membership or convention badge from a local chapter, or council, of a fraternal organization known as the Order of Independent Americans. Evidently, the council was located in Bellevue, Pennsylvania, as indicated by the keystone-shaped tag. Little is known about them, but they were apparently in existence by the late 1860's and remained active until at least the 1940's. As Stoney mentioned, their emblem looks somewhat Masonic, and it also resembles that of another fraternal group, the Jr. Order of United American Mechanics; however, there is an open Bible superimposed upon the compass & square used by the Order of Independent Americans.
