Two decorated sherds included in the 1977 offering are consistent with design details on vessels from the 2000b offering, located only about 5.5 m away, and cut through Conchopata's Pink Plaza (compare with Figure 15.21). Inclusion of sherds surely from the 2000b offering vessels means that these fragments were probably littering the ceremonial area when the 1977 offering was interred. Although probably close in time, the 2000b offering must be older than the 1977 offering.
Isbell, William H.; Uribe, Mauricio I.; Tiballi, Anne; Edward P. Zegarra, 2018, "Visual database", https://doi.org/10.25346/S6/1B33FN.