This is a vintage Otagiri coffee mug from the Mallard Series, made in Japan in 1982. The round ceramic mug features a green color with gold trim and a Mallard Duck character. It is a perfect all-occasion coffee mug with a country style and vintage features. The mug is 4.25 inches tall and 5 inches wide, and it comes as a single unit. It is a rare find and a great addition to any coffee mug collection.