New, old, stock, box of 6 pistons for an Nash 6.  I don't have the year, model(s), nor engine specifics for this application.  Pistons are still in excellent condition, and original box.  The Kany Skore brand was sold during the 1920s and 1930s.  Their claim was the  pistons "can't score" the cylinder walls of an engine, due to their pattented spiral ring around the piston's skirt.  This feature supposedly permitted expansion and contraction, preventing scoring.