1920s sample book for Lamprolac pigments

Compagnie Nationale de Matières Colorantes (Établissements Kuhlmann) – Colorants Lamprolac / Lamprolac Dyestuffs / Lamprolac-Farbstoffe Paris: Kuhlmann, n.d. (c. 1920s). 21 × 14.5 cm. Hardcover. 3 pp. text + three-panel foldout of mounted color samples. Manufacturer’s sample book for Lamprolac pigments, with trilingual title page (French/English/German) and introductory technical text describing properties and applications in printing inks and coatings. The foldout presents vivid mounted swatches (yellows, reds, violets, blues, and greens) in two dilution strengths (“coup. 1:30” and “1:5”), Very good condition. InvH4