The "bifurcated band" symbol taken from the Pucara-style Qaluyu stela, Puno. Drawn by Stanislava Chávez from original rubbings made by Sergio Chávez.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.