Portrait; single-sided Primary: 0.242- 0.244 mm Secondary: 0.209- 0.215 mm Both support are machine-made, primary support: art quality paper which has been coated with pigment (recto has faded, but originally green in color; verso remains green). Secondary support is black and thinner machine-made paper: internally dyed with less sizing than primary support. Primary support is thicker and stiffer than secondary support. Painting is executed on the more textured side (felt), wire side on verso.