The mezzotint of Cotton Mather, made in 1727, sold for two shillings.
Mezzotint is properly to be considered as chiaroscuro drawing on metal.
I never said that mezzotint ignored light and shade, or ought to do so.
The edge of the mouth is defined by a mezzotint at the point of union.
Several of his portraits he engraved with his own hand in line and mezzotint.