New old stock, tested due to the age and it works fine! Sylvania Daylight Plus MB19 light bulb.  It is crystal, less prone to breakage for a safer, shatter-resistant bulb.   It is bright, natural light, suitable even without a shade. Daylight Plus white light, making it perfect for creating a cozy ambiance in any room. Crafted with exquisite attention to detail, this bulb is a great vintage addition..

With its unique design and high-quality construction, this vintage bulb is sure to become a conversation starter. The white color of the bulb complements any style of decor and adds a touch of elegance to your space. This decorative crystal light bulb is the perfect choice.