List of articles:

Color, philatelist and philately (15.02.2025)

Scientific treatise on color and color shades from the perspective of science and human perception and their significance in philatelic studies.

When blue is blue (03.05.2025)

Scientific treatise and study on the composition of the paint on the Protectorate 5h blue linden leaf stamp. Study of the dependence of the amount of paint on the color shade of postage stamps.

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