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There were additionally verified significant effects of all studied factors (lumber species, lacquer/coating system kind, lacquer modification, wood pre-treatment with pigment and tarnish mordants). The spruce wood areas coated with solvent-based polyurethane lacquers were less stable (ΔE = 10-19, influenced by the lacquer kind) compared to the pine areas addressed in identical ways (ΔE = 4-11). There have been also verified significant impacts associated with the certain area treatment from the colour s