After a long period during which the subject was taboo, an increasing number of museums are opening up to a transparent accounting of counterfeit works, exchanging insights, and, if necessary, writing off works from their collections. With a concentrated studio exhibition, the Museum Ludwig is also posing questions about authenticity using the example of the Russian avant-garde. In addition to Pop Art and Picasso, this is one of the focuses of the museum’s collection, with more than 800 works from the period between 1905 and 1930, including some 100 paintings. For various reasons, works of questionable authorship have continually found their way into private and institutional collections. The Museum Ludwig is also affected and is currently investigating its collection with the help of international scholars. The exhibition will present the initial ?ndings as well as art-historical and technological methods for making artistic authorship or false attributions recognizable, with works by Natalia Goncharova, Kliment Redko, Nikolai Suetin, and other artists.