Civil War era buttons may show a circular depression at the base around the shank. Two-piece hollow rounded buttons held together by a thin rim ('staff' buttons) were invented in the 1830s and used until 1902. Two pieces crimped together were first made about 1813. A two-piece button with a brazed shank is typical of 19th century.

A one-piece button with a brazed shank (soldered appearance) is a design common in the 18th century, but was also made after. Some rules of thumb of age can be made as to how the shank is attached. Finally, the back mark may not only indicate the manufacturer, but if a particular mark or the manufacturer was in existence for a narrow time period, you can further pin down the likely age and use of a button. The buttons construction also offers a guide to age. Keep in mind that certain devices were used for many decades, so other clues are needed.

First the 'device' (design) identifies the service or state militia that used it, and generally when it was used. US Military Uniform Button IdentificationĪ uniform button's use and age is principally determined by three characteristics, usually considered together.

Civil war navy officer button