Portrait; single-sided Primary: 0.248- 0.249 mm Secondary: 0.244- 0.246 mm Both supports are machine-made. The primary support is brown (dye applied to pulp), textured surface, heavier degree of sizing. The secondary is thinner, less sizing (softer), grey in color and internally dyed. The paint is located on the felt side of primary support, wire side on the verso.