Brass base has adjustable bands and features his "TM" initials on each side over Ralston checkerboard pattern. Top has brass loop holding silver luster aluminum tube which has a mouthpiece as well as a metal rod that slides in and out so that when blown the pitch of the whistle changes. Underside of tube has two indent marks each 3/16" long. These don't show from most angles. Most luster remains. Fine.