(1739) Porto Bello Button. Adams-Chao unlisted. Pinchbeck, 27.7 mm. Extremely Fine, Environmental Damage. 31.4 grains. Carefully inked and lacquered on back NORTH REDOUBT / WEST POINT. Shank broken but mostly present. A type unseen by Adams, showing a single tall ship between two fortified castles beneath PORTO BELLO. Typical ground patina, with dark olive surfaces retaining flecks of light brown. Sharp and attractive, an important piece, not only for its rarity, but for its American provenance. <strong>To view supplemental information and all items from the Sydney F. Martin Collection, click<a href="https://stacksbowers.com/sydney-f-martin-collection/"target=’_blank’> here.</a></strong> From the Sydney F. Martin Collection. Earlier excavated in West Point, New York; John Kraljevich Americana, August 2011.