I bet a PXRF almost any copper artefact from that region of S America, one would find a trace of Iridium! (a handheld pXRF can show 1 part per million! 0.000001)
I do agree, many cultures, Egyptian and Asian, made spectacular blades from hammered meteorites.
Mughal Emperor Jahangir dagger
King Tuts Meteorite Blade "Meteoritic iron is clearly indicated by the presence of a high percentage of nickel," the study's main author, Daniela Comelli, said.
That being said, those blades had the high nickel content from the meteorites...(not simply iridium in copper) This is why we use the pXRF to create databases of the content to compare with smelter or mine locations.