Case XX single blade full size CopperLock with Dark Red Jig Bone handles - 61549L CS.  Carbon Steel Locking Clip blade.  4 1/4" closed.

USA

NOTE:  This knife has high carbon steel blades.  This steel, while considered by many to be a superior pocket knife steel will rust and tarnish.  Keep clean, dry and lightly oiled to help preserve the blade finish.