This sight was first patented April 9, 1867. This is an excellent all around sight for the person who wants a combination target and hunting front sight. It provides the choice of a globe front sight with post and ball or an open blade front. This sight is blued and comes with a 3/8" dovetail. Some fitting required to fit your dovetail. The blade is .065" wide and is .325" high measured from the bottom of the sight to the top. The bead front sight is .385" tall from the bottom of the sight to the top of the bead when flipped up.