This Lefty Chameleon D/A linerlock by Butch Vallotton has a hidden push button under the rubber scale on the back side of the handle. Leaf spring action and smooth manual action. Bead blasted blade and FRN handle scales with rubber inlays, stainless steel liners. Good function, nice detent, lockup and blade seating. Numbered #208 on back side of blade. Comes with original nylon sheath. Has a couple light scuffs, otherwise great condition.