material: steel, workmanship to be per mil-std-454, req 9, mark (assy) 0N124080 in location shown using .09 high alternate gothic no.3 characters per group i of nsa-2 or group ii of nsa-2 with semi-gloss enamel per tt-e-529, class a, color no.27O38 (black) per fed-std-595, dimensions