Anthracyanin A-Marken = Anthracyanine A-brands = Les marques d'anthra cyanine A
A 1900 dye sample book issued by the Farbenfabriken vorm. Friedrich Bayer & Co. at Leverkusen near Cologne, printed in German, English and French to show wool dyers and buyers its Anthracyanin A dye brands. The pictures are rows and pairs of woven wool swatches in graded shades from slate grey through navy to black, and in olive and brown, each on a plain cream card with thin black rules, useful to a designer for working out tonal ranges and how dark fabric reads when stacked.
