Sep 5th View all posts by admin Posted in canada Tagged canada, coin, event, langerburg, phenomena, silver, unexplained Canada $20 Silver Coin Unexplained Phenomena, Langerburg Event, UFO, 2024 Canada’s Unexplained Phenomena Coin. The Langerburg UFO Event. 99.9% Pure Silver. Weight: 31.56 gr. Size: 49.8 x 28.6 mm. Face value: 20 dollars. Flash black light: Included. Gift: Special deck of Bicycle playing cards.