A vintage patent diagram illustrates a golf ball and its technical specifications across five detailed figures rendered in white lines against a solid black ground. The composition centers on two cross-sectional views of the dimpled sphere at top, followed by four schematic drawings showing the ball's structural geometry and measurements in the characteristic style of early 20th-century patent documentation. 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.