Anniversary Heritage Mug, 12 fl oz All stories have their beginnings, and this ceramic mug captures ours, with a design inspired by our first Starbucks® coffeehouse. The shape and design of this matte white ceramic coffee mug gives a nod to the first store we opened in 1971. The metallic Siren logo has a beautiful copper sheen with green accents. A cool squared off handle completes the distinctive look. Part of our Anniversary Collection. Holds 12 fl oz. Handwash only. Do not microwave.