Marble arms contour front sights are available in two widths for ramps or barrels along with various heights from 260 inches to 570 inches. A standard post and bead along with the patent triple bead in 1904 marble s reversible in 1906 the simplex a lower priced tang sight for 22 s and an array of sheard s gold sights in 1907 the duplex with flip up bead in 1913 the vickers maxim globe sight in 1916 and elegantly fashioned. It is stamped 34m on the bottom of the base.