SDS
Cobalt Blue: “True blue,” first manufactured in 1804.
Series 3
Semi-transparent
Vehicle: Alkali refined linseed oil
Lightfastness I, PB28, PB15:2
SDS
Cobalt Blue: “True blue,” first manufactured in 1804.
Series 3
Semi-transparent
Vehicle: Alkali refined linseed oil
Lightfastness I, PB28, PB15:2