A single sherd from the 1977 Conchopata offering pit is decorated with a Profile Attendant consistent with 2003 imagery. This shows that the 2003 jars belong with offering pottery smashed in the ceremonial area of Conchopata where the 1977 and 2000b offerings were discovered. The inclusion of this sherd also shows that the 2003 pottery is almost surely slightly earlier 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.