Sterile 18cm Italian Transitional Stiletto vintage 1960s automatic knife

Vintage sterile 18cm Italian Transitional Stiletto automatic knife made in Italy in the 1960s or early 70s. It measures 17.8cm (7 inches) open and 3 7/8 inches closed with D stamped brass liners and nickel silver bolsters, button & safety. The bayonet style blade is 98% full or better with original finish with light scratches a little spotting and one tiny notch in the cutting edge near the ricasso. No makers mark (stamp) on the blade. It's thought by many that the lack of a maker's stamp on these vintage Italian switchblades indicates that the knife was not made for export and likely sold in Italy originally. Can't confirm this yet. The scales (handles) are genuine horn and in excellent condition with the back scale being black and the front Gray (smoke) swirl. Safety works. EX condition.