The original high gloss Jet Black, introduced in 1922, did not perform well. So, in 1928, Cowan developed a coal Black that could be produced successfully in semi-gloss, high gloss or sometimes with a mirror surface.
The original high gloss Jet Black, introduced in 1922, did not perform well. So, in 1928, Cowan developed a coal Black that could be produced successfully in semi-gloss, high gloss or sometimes with a mirror surface.
