A Dog Leg Jack by John Lloyd . 3-3/4" closed ,blade is 2-3/4" with 2-1/2" of cutting edge .Opens to 6-1/2" OAL. Blade & spring are 52100 carbon steel.Mill relieved liners ,inlaid shield & pins are stainless steel.Smooth and snappy action,pull is about 5+ and it is pinchable to open.Spear point blade has a nice thin hollow grind,crescent nail nick and swedge .Very nice looking ,durable vintage Westinghouse Ivory paper micarta  . Nice thin light pocket knife 
​$585.