Concentric circles and geometric gears in varying sizes fill a rectangular composition in soft beige and gray tones, arranged in a dense, symmetrical pattern that suggests mechanical harmony or celestial motion. The delicate stippled shading and precise linework create an intricate, antiquarian quality characteristic of 18th-century scientific illustration. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.