The mark consists of a crest with the mark "NAK" above in red letters outlined in white then outlined in black and partially on a bronze inverted trapezoid extending from the top of the crest; the crest is a red shield having four sections therein each outlined in black: the bottom section has a white background with a symmetrical bi- sloping top and conforming to the shield shape on the sides and bottom with bronze hands clasping forearms above red branches with oblong leaves; a second section having an bi-sloping bottom, a horizontal top, and vertical sides with eleven vertical spaced apart bronze bars over the red background; a third section comprising a rectangle in upper left with a white background having a black line image of an open blank book with dual ribbon bookmarks below a bronze oil lamp with bronze flame, all outlined in black, surrounded by eight red glow marks; a fourth section comprising a rectangle in upper right with a white background having a bronze Aztec temple, outlined in black, in front of a bronze sun with red outline surrounded with eleven bronze radially extending flames interspersed with twelve red radial glow marks; a white scrollery above the shield having red ends, three parallel horizontal red lines, a partially obscured bronze "M", outlined in black, and a bronze label, outlined in black, bearing the red letters "S.L.O." and two black curvature lines on either side; the shield outlined in black and the sides and bottom further outlined in bronze and further outlined in black with bronze drapery descending on the outer sides of the shield outlining; below all an undulate bronze scroll, outlined in black, with black shading hanging on bronze leaves and bearing "NU ALPHA KAPPA" in red letters.