It seems there is a slew of these forged works. Natalia Kournikova of the Kournikova Gallery in Moscow notes in the piece that "we can say that almost every artist whose prices have risen has become the victim of fake makers." Alla Rosenfeld, curator of the Norton Dodge Collection of Soviet Nonconformist Art at Rutgers University from 1992 to 2006 and former vice president of the Russian art department at Sotheby’s New York says “There are more fakes than genuine pictures”:
The means with which these forged works are given clean histories are familiar: publication in academic works or exhibition catalogs; previous owners who have suddenly disappeared or are unavailable to corroborate their story; questionable certification by Russian art historians, and a general lack of sufficient documentation. Again, it appears as if a segment of the art trade continues to skirt the rules. As I've argued elsewhere, we need a renewed emphasis on the means by which buyers of art acquire good faith status.
Fake icons and “fauxbergé” trinkets have bedeviled the art market for generations, but the escalating demand for Russian art in the last two decades has led to more ingenious abuses. For a while, “Russified” pictures—minor 19th-century European landscapes or portraits doctored to look Russian—flooded galleries and antique dealerships in Moscow and made their way to the West, appearing even at major auctions. But it has been Russian modernism—art from the first three decades of the 20th century—that has attracted the most Western collectors and consequently the most forgeries.
Hundreds of works have appeared in recent years at auction houses and in galleries all over Europe, from Munich to Madrid. These works have very sketchy provenances in which certain assertions are repeated again and again: the works are said to have come from hitherto unknown private collections or to have been smuggled to Israel by immigrants in the ’70s or to have been deaccessioned by provincial museums in the former Soviet republics—although this practice was strictly forbidden—or to have been confiscated and hidden for a half century by the former KGB (the secret police), although experts say there is not a single documented case of avant-garde works emerging from KGB vaults.