Pinback button for SNCC's One Man One Vote campaign

A Student Nonviolent Coordinating Committee pin back button with the top half in black with white text and the bottom half in white with black text. In the middle, center is [SNCC] with the letters split in half with the top half in white and the bottom half in black. The text on the button reads: [ONE MAN / SNCC / ONE VOTE]. On the reverse is a small, white, round sticker with the number [173] and a pin without a fastener.