Federal Artillery Button, eagle with "A", one part convex Robinsons & Jones rm, (20mm.) Button depicts eagle facing right with "A" in the shield, generally for artillery officers. Backmark: "(star) ROBINSONS, JONES & CO (star) / A" rm, between one upper raised ring and two lower, concave back on one piece button, coat size. One part convex button.
Reference: Albert AY64, Tice AY199D5
Inventory Number: BUT 029