This listing is for the Antique Milk Glass Figurine/Christmas Tree Lightbulbs. There are over twenty bulbs to choose from within this lot; there is no guarantee that these bulbs are functioning. Milk glass Christmas tree light bulbs are a type of opaque white, figural bulb popularized in the United States by Japanese manufacturers in the 1920s. They were introduced as a sturdier and more heat-resistant alternative to the earlier, delicate, clear-glass European bulbs, which often suffered from flaking paint. Produced throughout the mid-20th century, these collectible bulbs were hand-painted in vibrant colors and came in numerous shapes, including fruits, flowers, animals, and popular cartoon characters. By the late 1950s, their popularity had declined with the rise of plastic and aluminum decorations, making surviving vintage milk glass bulbs rare and sought-after antiques today.