Antique 1926 Mineral Lithograph Print SetAntique 1926 lithographic print set featuring two complementary mineral studies from the same early 20th century series. One print presents an open, more organic composition, while the other features a structured arrangement of numbered specimens. Together, they create a balanced contrast between scientific precision and visual rhythm. Printed on aged paper with a soft patina, both are mounted on modern backing boards for stability and display. A