Vintage Light Bulb Illustration

A classic illustration of an early incandescent light bulb, featuring a distinctive double-loop or heart-shaped filament design. The internal structure, including the glass stem and lead-in wires, is clearly depicted within the clear glass envelope. The base appears to be a bayonet type, and there are faint 'Ms' markings visible on the metal collar, suggesting a specific manufacturer or model. This black and white drawing captures the engineering and aesthetic of vintage lighting technology.

vintage - lightbulb - illustration - incandescent - old - antique - technology - electricity - drawing