The Latin N's sound, traced to Phoenician nun through Greek nu elsewhere in this atlas, has a comparatively uneventful graphic history. Nun's fish-sign simplified early into a zigzag line, and Greek nu preserved that basic form as two verticals joined by a diagonal, a shape Etruscan and Roman scribes carried into Latin with little alteration; the Roman capital N, essentially the same two-vertical, one-diagonal structure, has remained stable since classical antiquity, and the lowercase n, formed in medieval cursive by rounding the diagonal into a simple arch between two short strokes, is one of the more legible and consistently shaped letters across different typefaces and handwriting styles.
N has no numeral value in the Roman system and, unlike several of its neighbours, was never repurposed for any parallel notational use in classical Latin; its history after the alphabet's adoption is essentially just the ordinary history of a working consonant, without the numeral or shape-splitting complications that mark letters such as I, G or U. Its main point of interest is negative: among the Latin letters most often assigned a value in modern numerology systems, N is not one that classical Rome itself ever pressed into double duty.