Grade B quality Cassis Cornuta Shell, Horned Helmet Shell, Cassis Cornuta Seashell, also called a Yellow Helmet Shell.  The "Cassis cornuta," also called horned helmet shell, is a large heavy peach colored shell, faintly marked with whites and browns. (Has white calcium in the mouth of the shell - see photos)   It measures approximately 9-1/2 inches tall and 8 inches wide.  Carefully review all photos. This is the one you are buying. Would make a nice addition to a shell collection.  These large seashells live mostly in warm waters around the world.   This is a real cassis cornuta shell - not a replica.  It will have some imperfections from living in the oceans and aging.