James Butler Hickok (May 27, 1837 – August 2, 1876)

“Wild Bill” Hickok, one of the greatest gunfighters of the
American West, was murdered in Deadwood, South Dakota
while  playing poker when Jack McCall walked up behind
Hickok,drew his Colt Model 1873 revolver and shot Hickok
in the back of the head at point-blank range, killing him
instantly.

McCall was hanged in a public execution in
Yankton, at age 24.

Colt Model 1873 revolver.

The poker hand purportedly held by Hickok at his demise.