Barnes A total of 5 buttons were found at the North Bank site during 1997 excavations. Three buttons from the North Bank are manufactured from bone. Both of these specimens have concentric rings on the somewhat convex top face.
Bottom faces differ slightly however.
One specimen bears the mirror image of the top face, while the other specimen has a concave bottom face with an inner concentric ring. 97-278 has a diameter of 11.25 and a bore diameter of 1.8mm. This specimen has no concentric rings, one surface is concave while the other is convex, and has two perforations. Specimens 97-201 have been determined to be modern plastic buttons. As will be noted in this discussion, glass comes in all of these categories, ranging from cosmetic mirrors, to window glass.