THE HEAD OF THE ONE RESEMBLES A DUCKS HEAD ON THIS VARIETY. THIS OCCURED ON SCOTT 934 THE 0NE DOLLAR GLACIER NATIONAL PARK STAMP ISSUED AUGUST 15, 1984. UNFORTUNATELY THERE IS SOME DAMAGE ON THE RIGHT HAND SIDE OF THE STAMP. THE STAMP IS USED. FOR OTHER ITEMS OF PHILATELIC INTEREST ESPECIALLY ERROR STAMPS, ANTIQUES AND VINTAGE COLLECTABLES PLEASE VISIT MY OTHER ADS.