The term “killed coin” by numismatists means a coin that has lost the signs of authenticity during the circulation process. At one of the largest European auctions, rare and very expensive Russian coins from a collection that was considered lost for many years are unexpectedly being put on display. The legal heirs of the last known owner, a powerful oligarch who claims that he bought it back in his time, and even former employees of Soviet foreign intelligence immediately begin to lay claim to the collection. However, the new owners of precious coins also do not intend to give up their rights, and this whole story begins to affect the interests of powerful auction houses and European intelligence services... The new novel by the recognized master of action-packed detective Nikita Filatov and world-famous expert Vadim Shiryaev fascinatingly and absolutely reliably lifts the veil that covers the criminal past of Soviet numismatics, the complex world of modern collectors and the behind-the-scenes side of the activities of Western auction houses.