Brass knuckles.

[major bill]

I know that brass knuckles occasionally turn up at Civil War sites. Were these more for non battle use? I mean no one would bother wearing brass knuckles when so many other better weapons were available.

 

[major bill]

From Maryland Shooters. Many types here.

 

[chubachus]

This one was carried by one of Abraham Lincoln's bodyguards during his trip through Baltimore in 1861:

Source.