Probably late 60's / early 70's. What a great mug! 5" Donald head with removable Blue sailor style cap (traditional) with straw hole in it. Great detail and coloring and the mug is over 5" deep from handle to bill! Top seam by hat has a tiny space but appears intentional as hat barely goes on when clenched tightly together. Regardless, this space is only 1/4" and above fluid level. Likely a mail-away premium and marked "Donald Duck 100% pure Fruit Juice" on the bottom. NM-.