Schrade Cut Co 1404B Single Jack Black Celluloid switchblade knife

Schrade Cut Co 1404B Single Jack Black Celluloid switchblade knife made by the Schrade Cutlery Co of Walden, NY sometime between 1916 and 1946. This knife was designated the 1404B with black celluloid scales. It has one blade that is activated by pressing the button. The knife measures 3 3/8 inches closed and 5.75 inches open with brass liners and nickel plated button & safety. The blade is about 90% full with patina and some scratches and is stamped SCHRADE CUT CO WALDEN NY and three patent dates, 09,10 & 16 on the back of the tang. The scales are in very good condition with no cracks, just a few handling marks. The knife works well with tip below the liners closed, opens fully when button is pressed and  locks open well with 1/8" up and down at the tip. Does rattle if shaken when open. These single blade Schrades are much less common than the doubles so a little more valuable. Safety works. VG condition.