Installed in 1901, this 4 watt, hand-blown carbon filament light bulb is a testament to durability and energy efficiency.  New bulb technology promises long-life and low energy cost, but this centenarian superstar sets the bar very high for longevity and performance.  The bulb, which has been recognized by the Guinness Book of World Records as the ‘World’s Most Durable Light’, has now reached the ripe old age of 112 years and is still glowing strong!