See last picture which shows a glaze knick on edge. The Metropolitan Museum of Art Hand Warmer Book Flask is a beautifully crafted piece of Portuguese art pottery, featuring a floral pattern in blue and yellow colors. This vintage liquor flask and hand warmer is adorned with intricate hand-painted details and a high gloss finish, making it a decorative and unique addition to any collection. Made in Portugal, this piece showcases the exquisite craftsmanship and artistic style that Portugal is known for in the world of art and pottery.