The top image shows three Mayan artifacts. On the right is a serpent head not unlike the heads visible at the stair bottoms on the Castillo at Chichen Itza. On the bottom a face and on the left a tigre. Above in the image is a Peruvian artifact, a lizard on a jar lip.
The lower two images are the "doble yo" from San Agustin, Colombia. The artifact, according to local archaeologists, represents a kind of ego/alter ego subject matter common to that area.
I came across these and other artifacts about thirty five years ago while traveling. One interesting aspect of the "doble yo" is the juxtopposition of faces, not unlike the compositions I am finding in Virginia which have facial profiles and sculptural faces opposed on the pieces that are human and human/animal combinations as well as purely animal combinations. Speculation might lead one to think that this compositional technique from San Agustin could have been influenced by artists in very deep time as the Va/NC artifacts types appear to be very wide spread geographically.
It would be nice if the physical qualities of the Virginia and NC artifacts of this thread were so clearly presented as those in the images above. They are not, however, and one is challenged to properly characterize them.