A vintage patent drawing depicts two tapered baseball bats rendered in precise technical lines, flanked by detailed cross-section diagrams showing the bat's construction from multiple angles. The sepia-toned paper and formal patent notation create an antiquarian aesthetic that celebrates the engineering precision underlying America's pastime. 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.