Presented is a possibly unique 1909-1911 E90-1 American Caramel Cy Young (Boston) proof, graded 40 VG by SGC. With the presence of period printer’s guidelines, the attractive portrait of this upper-echelon Hall of Famer offers the advanced collector a seldom-encountered opportunity. This relic is highlighted by a radiant red background and team initials on the hurler’s chest. The corners are bright and moderately touched, while a pair of spider creases are found on the bottom-right corner. The reverse reveals moderate color bleeding from the surface but does not detract from the astounding visual appeal of this dynamic caramel card.