This is a shadow pattern Dog Leg Jack with walrus oosik by John Lloyd. N.Y. Knife Co.  shield . 52100 carbon blade & spring . SS mill relieved liners ,pins & shield. 3-3/4" closed,blade is 2-3/4" with 2-1/2" of cutting edge . Opens to 6-1/2" OAL.  Pinchable ,smooth ,snappy 5+ pull. Hollow ground,swedge ,crescent nail nick . What a great EDC pocket knife
​$525. includes USA shipping and Paypal fee's