I think this had a top but it's missing. It's not a true light bulb
Vtg Cobalt blue glass Pillar/ Taper candleholder Art Glass Modern Heritage
Vtg Italian Blue Glass Gold Design Decanter MCM
Vtg Cobalt Blue Glass Shoe Fenton Hobnail Victorian Shoe
Vtg MCM Blue Glass 5 Finger Swung Stretch Vase 10 1/2”
VTG Ikebana Blue Brown Ceramic Vase Bowl With Pin Frog RAM Japan Floral Flowers
VTG Cobalt Blue Porcelain 3 1/2" Bud Vase Japan Kutani Gold Accents