This impressive restoration of the iconic French Wonder lamp done by YouTuber ‘My Mechanics‘ is, like most of his other projects, mesmerizing. Railroad workers used these Wonder lamps in France around the 1950s to signal that a train was arriving or departing. They are often seen at auctions worldwide as industrial collectible items and have become wildly popular as home decor. The restoration of this French Wonder lamp took him 2.5 weeks and cost him $105.