chiucnahui (CQ)
This notation for the number nine (chiucnahui) consists of nine ones or counters in the shape of circles. One grouping of five circles arranged in a horizontal row across the top has coloring (red, brown, and blue, but in no particular pattern). The other grouping of four ones or counters run in a vertical row, connecting with the horizontal five at a right angle. The top one may be painted white, while the others are left natural.
Stephanie Wood
The two groupings of ones makes numerical sense. The word for nine in Nahuatl consists of a variation on the older root for five (here, "chiuc") plus four (-nahui). The result is an equation of five plus four, or nine. See the Nahuatl-language discussion of Libra, the ninth sign of the zodiac, in Lori Boornazian Diel, The Codex Mexicanus: A Guide to Life in Late-Sixteenth-Century New Spain (Austin: University of Texas Press, 2018), 173. This spelling is suggestive of an early form (chicui-) that produced prefixes chic-, chiuc-, and chicu- that combined to make various numbers.
Stephanie Wood
covers ruling men and women of Tecamachalco through 1593
Randall Rodríguez
nine, nueve, numbers, números
chiucnahui, nine, https://nahuatl.wired-humanities.org/content/chiucnahui
nueve
Randall Rodríguez
The Codex Quetzalecatzin, aka Mapa de Ecatepec-Huitziltepec, Codex Ehecatepec-Huitziltepec, or Charles Ratton Codex. Library of Congress. https://www.loc.gov/item/2017590521/
The Library of Congress, current custodian of this pictorial Mexican manuscript, hosts a digital version online. It is not copyright protected.