The "Copper" was used by the First Nations people as a form of money and wealth. It was made out of "Native" copper which was found in the land where they lived, and superficially resembled a shield. Considered very rare and hard to obtain, raw copper was traded from the Athabaskan Indians in the Interior Plains, or from the white man in later times.
Please upload the photos of the women but I would say that they compare because they are both an artwork of a woman and they contrast because there is a realistic artwork and a I guess a non realistic one also the colors are different.