Sylcone Retro DC200 Hand Blown Light Bulb. This To LEDo DC200 Retro Sylcone unique hand blown bulb from Sylvania combines contemporary aesthetics & innovative LED filament chip technology (FCT) to create a popular retro look & warm ambiance similar to traditional lamps. Although the bulb can be fitted to traditional light pendants with an Edison Screw Cap (E27) fitting it looks great when combined with Sylvania Sylcone light pendants which come in a variety of finishes including copper to create a statement look which would be a focal point in your home.