Beautiful US Army staff officers coat button. Formerly of the Ron Tunison’s Gettysburg collection. Wonderful chocolate patina on this one. Shank is intact on the reverse. No pushes or dents to the face of the button. Looks to be a Waterbury back mark. If you are familiar with Gettysburg you are familiar with the name Ron Tunison. A former sculptor, Ron has the distinction of having for bronze sculptures on the Gettysburg battlefield. Ron unfortunately passed away in 2013. Very nice button.