tecpatl (CQ)
This flint knife (tecpatl) has been carved from the compound hieroglyph (with notation) for the personal name (a date) Ome Tecpatl. We see a leaf-shaped (or marquise shaped) red and white blade, leaning slightly to the viewer's right. The red is the upper portion, and it is separated from the lower white portion by a diagonal line.
Stephanie Wood
The tecpatl was a calendrical sign, which testifies to its religious significance. The person bearing this name was probably born on the indicated date, which had divinatory associations.
Stephanie Wood
covers ruling men and women of Tecamachalco through 1593
knives, blades, flint, navajas, cuchillos, calendarios
tecpa(tl), obsidian knife or blade, https://nahuatl.wired-humanities.org/content/tecpatl
el pedernal
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.