This is listed as Corten steel and signed "Serrano Fajardo." A quick search shows that corten steel is a kind of rusted building material, but the other name reveals nothing. Gorgeous and infinitely useable.
Liminal Moment by Bobblayers, each time laying the paper down on the heated plate. In the final stage she often paints back into the image with a oil paint and a brush. Japanese washi paper used for this process, then matt and frame them under glass.
Background: This book takes place in the early and its in the Dominican Republic. And the Dominican Republic was under the rule of a cruel leader named el jefe who was all about controlling his people .