22mm, Silver Plated Massachusetts Volunteer Militia 2pc Coat Button with a "R & W. Robinson/*Extra Rich*" backmark. Low convex style. Silver Plated, smooth patina. Dug.

During the Civil War, Massachusetts Volunteer Militia units, like the 6th and 4th regiments, played a crucial role in the Union effort, participating in key battles and deployments, including the Baltimore Riot and the Siege of Port Hudson.