A vintage patent diagram shows a baseball at the top with detailed stitching patterns, followed by two unrolled views of the ball's construction and seam layout below. The composition is rendered in simple black line work on a weathered cream background, capturing the technical precision of early 20th-century patent illustrations with their characteristic sparse, informational style. 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.