This extraordinarily large biface is one of the
made examples in the world and is a testimony to the
skilled Aztec "flint smiths" of Pre-Columbian
Mexico. There are
no more than a handful of flintknappers today that would be
able to duplicate this large ceremonial knife. But the difficultly
today, just as it must have been for the Aztec craftsmen, was
availability of material big enough to make bifaces this large.