A technical patent drawing from 1925 illustrates a basketball in three detailed views, rendered in precise black line work against a clean white ground. Labeled diagrams show the sphere from multiple angles alongside two cross-sectional views, capturing the mechanical specifications of the ball with the formal clarity of vintage scientific 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.