In a news release, GE said employees at its NELA Park in East Cleveland, OH, recently opened a century-old time capsule. Among the items uncovered were five light bulbs. Three of them appeared to be in working condition.

GE Lighting engineers cleaned one of the bulbs, screwed it into a socket, and powered it up to 60 volts. It started emitting a soft glow, a distant incandescent echo of Thomas Edison’s ingenuity.

“It’s a remarkable testament to the craftsmanship and quality of GE products that one of the tungsten filament lamps buried for 100 years showed signs of life,” said Maryrose Sylvester, president and CEO of GE Lighting.