An art forger must be at least somewhat proficient in the type of art he is trying to imitate. Many forgers were once fledgling artists who tried, unsuccessfully, to break into the market, eventually resorting to forgery. Sometimes, an original item is borrowed or stolen from the owner in order to create a copy. Forgers will then return the copy to the owner, keeping the original for himself. In 1799, a self-portrait by Albrecht Dürer which had hung in the Nuremberg Town Hall since the 16th century, was loaned to Abraham Wolfgang Küfner [de]. The painter made a copy of the original and returned the copy in place of the original. The forgery was discovered in 1805, when the original came up for auction and was purchased for the royal collection.

From 1994 until 2009, Knoedler & Co. admittedly — but, the claim goes, unknowingly — sold 31 other bogus paintings. Through those sales, the gallery raked in some $80 million. Luke Nikas, Freedman’s lawyer, says that she earned $10- to $12-million between 1994 and 2008. Moguls and megalevel tastemakers all thought they were buying works by such abstract expressionist blue-chippers as Jackson Pollock, Robert Motherwell and Willem de Kooning.

As for you artists, firmly establishing yourself as link number one in the chain of provenance is essential. These days, proof of authenticity or authorship accompanying a work of art is more important than ever. In order to prevent unscrupulous sellers from trafficking in fakes, and avoid situations where people question your art, keep good records right from the start and provide some form of documentation with every artwork you produce. The last thing you want is people trying to figure out whether or not you actually created certain works, or contacting you with requests to authenticate works that have no accompanying paperwork or documentation. The bad news is that in the long run, repeated incidents surrounding undocumented art can actually compromise your market. So make sure there's never any doubt that ownership of your art begins with you. Read more about how to do that in this article about How to Authenticate Your Art.

Forgeries may be detected by the methods of examination formulated by Jean Mabillon, in his great work De re diplomatica (1681), for determining the authenticity of a document by the writing and the style of the terminology. These techniques have developed during three centuries into the modern sciences of paleography and diplomatics, by which various scripts and formulas can be assigned to particular ages and localities, and effective comparison can be made between two examples of handwriting purporting to come from the same pen. Thus it is possible to state that a particular document could not have been written at the date that it bears. In dealing with printed texts, analogous methods are employed.

Among the forgers who have tried to make the experts look foolish is George Psalmanazar (1679?–1763). A Frenchman, he went to England where he pretended, with great success, to be a native of Formosa (Taiwan), and published a book about that island, which he had never visited. Another is William Lauder, who attempted to prove John Milton guilty of plagiarism by quoting 17th-century poets who wrote in Latin, into whose works he had interpolated Latin translations from Paradise Lost. A forgery made as a joke but taken seriously was the “Ern Malley” poems, offered to an Australian magazine in 1944 as the work of a recently dead poet. Actually it was composed by two young soldiers who wished to ridicule certain aspects of contemporary poetry.

Of course, beyond AML-related process concerns, any art dealer — just like any business person — always must remember that just about any financial transaction that involves proceeds known to have originated from illegal activity represents a criminal money laundering offense.  Stated otherwise, even if the BSA is not expanded to include dealers in art and antiquities, those in the U.S. art industry still need to bear in mind, in extreme examples, the omnipresent federal criminal code.  Sometimes, the provenance of the funds can be more critical than the provenance of the art.
Becky Those kind of questions are why the author wrote the book and we read it. Continue reading and you will discover the answers to your questions. If we…moreThose kind of questions are why the author wrote the book and we read it. Continue reading and you will discover the answers to your questions. If we answer those questions for you, it will spoil the reading.(less)
* Names of previous owners do not constitute valid provenance unless they provide concrete and irrefutable proof that the work of art in question is by the artist who the seller says it is by. For example, if an individual is listed as being the owner of the particular work of art in question in a museum exhibit catalog about the artist, this would constitute valid provenance.
Stylistic analysis is subjective: it rests on the astute eye of the art historian. Each artist has a style, a flair, a verve unique to himself, and this can be recognized. His style will undergo change throughout his career, and this, too, can be stylistically analyzed and documented from his known works. When an unknown work purporting to be by a certain artist is discovered, the art historian attempts to fit it into the overall body of works by this artist. The subject matter, the brushwork, the choice of colours, and the type of composition are all consistent elements in a given artist’s production. Any variation immediately arouses suspicion. When the idiosyncrasies of an artist’s brushwork are studied, a fraud can sometimes be detected in much the same way a handwriting forgery is proven. In ancient works, particularly in antiquities, the scholar must examine the iconography of a piece. Forgers rarely have the scholarly background to combine iconographic elements correctly, and their errors often betray them.
Though there are no hard statistics on the amount of laundered money invested in art, law enforcements officials and scholars agree they are seeing more of it. The Basel Institute on Governance, a nonprofit research organization in Switzerland — the site of the world’s premier contemporary and Modern art show — warned last year of the high volume of illegal and suspicious transactions involving art. But regulation has been scattershot and difficult to coordinate internationally.
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The Association of Certified Anti-Money Laundering Specialists (ACAMS) offers a professional designation known as a Certified Anti-Money Laundering Specialist (CAMS). Individuals who earn CAMS certification may work as brokerage compliance managers, Bank Secrecy Act officers, financial intelligence unit managers, surveillance analysts and financial crimes investigative analysts.
Any given antiquity may have both a provenience (where it was found) and a provenance (where it has been since it was found). A summary of the distinction is that "provenience is a fixed point, while provenance can be considered an itinerary that an object follows as it moves from hand to hand."[25] Another metaphor is that provenience is an artifact's "birthplace", while provenance is its "résumé",[26] though this is imprecise (many artifacts originated as trade goods created in one region but were used and finally deposited in another).
One may logically question the real meaning of the difference between a genuine and a spurious work of art when in many cases it requires such expert study to detect the difference between the two. Or to phrase it another way, what is the difference in value of a work of art that has been on view in a museum for 40 years, after it has been proved to be false? This is a somewhat philosophical point in that the object itself has not changed, only our opinion of it. Its monetary value has been reduced from that of a rare, expensive, original piece to that of an attractive but spurious imitation. Its aesthetic quality has become a real danger, as it is a perversion of the truth. The forgery presents a false understanding of the work of an artist or an ancient culture, one which has been perverted in its modern translation. To appreciate the work of ancient artists their work must be studied alone and not be diverted by forgeries, or one will be inexorably misguided.
A qualified authority is a difficult concept, because it’s more than claiming (or seeming) to be an expert. This individual needs to have significant background and experience with the artist. Such as published papers about the artist, or perhaps they teach courses, or have catalogued essays about this artist. Of course the artist themselves, relatives, employees and descendents of the artist are understood as a qualified authority. Once you have all of your documents corroborated and stored in your Artwork Archive account, you can have peace of mind.
Sometimes, they give us works that great artists simply didn’t get around to making. If a fake is good enough to fool experts, then it’s good enough to give the rest of us pleasure, even insight. The late Swiss collector Ernst Beyeler called a fake Rothko from Queens a “sublime unknown masterwork” in 2005 and hung it in his namesake museum. Why not think of that picture as the sublime masterwork that Rothko happened not to have got around to? Is it a bad thing if thousands more people in China get to own works by the great modern master Qi Baishi — even if the works they own aren’t actually by him? In some ways, they are by him, in the profound sense that they almost perfectly capture his unique contribution to art. If they didn’t, no one would imagine he’d made them.
A variation in composite forgery, quite common with inlaid French furniture, involves the use of parts from damaged but genuine pieces to create a single complete piece that may or may not resemble one of the pieces from which it has been made. These made-up pieces are still considered forgeries. In composites of archaeological material only one part may be ancient, the balance being made up to complete the object. The head of a small terra-cotta figure may be ancient, the body and limbs of modern workmanship. A single ancient element in a composite forgery will help to deceive the buyer.
Conventional X-ray can be used to detect earlier work present under the surface of a painting (see image, right). Sometimes artists will legitimately re-use their own canvasses, but if the painting on top is supposed to be from the 17th century, but the one underneath shows people in 19th-century dress, the scientist will assume the top painting is not authentic. Also x-rays can be used to view inside an object to determine if the object has been altered or repaired.
Ultraviolet rays readily reveal additions or alterations to a painting, since the varnish layers and some of the paint layers fluoresce to different colours. Ultraviolet is also used in the examination of marble sculpture. Old marble develops a surface that will fluoresce to a yellow-greenish colour, whereas a modern piece or an old surface recently recut will fluoresce to a bright violet. Infrared rays can penetrate thin paint layers in an oil painting to reveal underpainting that may disclose an earlier painting on the same canvas, or perhaps a signature that has been painted out and covered by a more profitable one. X rays are used to examine the internal structure of an object. A carved wooden Virgin supposedly of the 15th century but revealing modern machine-made nails deep inside is obviously a fraud. A forger usually works for the surface effect and is not concerned with the internal structures.
The United States similarly requires all cash transactions of $10,000 or more to be reported. Still, laundering involving art tends to be handled case by case. Federal prosecutors, who usually discover art-related laundering through suspicious banking activity or illegal transport across borders, have worked closely with other countries and aggressively used their powers under civil law to confiscate art that they can establish is linked to a crime, even in the absence of a criminal conviction.
Clare Roth is an artist who ekes out a living making copies of Degas paintings and other masterpieces while she struggles to live down a mistake from her past. She enters into a complicated agreement with a powerful gallery owner to forge a stolen Degas painting in return for a show at his gallery. Things take a turn when she suspects that this stolen "masterpiece" is also a forgery.
A notable forger of the late 20th century was Shaun Greenhalgh, who created several works of art in a variety of styles and, after carefully constructing a credible provenance for each, sold them over the course of roughly two decades with the help of his parents, George and Olive Greenhalgh. One of his notable forgeries was a stoneware sculpture, The Faun, thought to be a rare unglazed ceramic sculpture by Paul Gauguin, another was the Amarna Princess believed to date from 1350 bc.
They invented a story that fooled them all. Helene said her grandfather hid his art collection at his country estate in Germany before the war to protect it from the Nazis.  When he died, she said, she inherited it.  But there was nothing to inherit, because there had never been a collection. Every one of the works had been painted by Wolfgang Beltracchi.
Despite those advances, the detection of fraudulent art remains a complex undertaking. It is particularly difficult to weed out forgeries in the work of modern artists whose large numbers of works and superstar statuses make them especially attractive to those who commit fraud. Pablo Picasso, for example, was a prolific artist, creating a huge number of works on canvas and on paper as well as sculptures and ceramics. Considering his vast output and the varying styles and media in which he worked, scholars have had difficulty establishing a definitive corpus for him. The prestige associated with owning a Picasso and the difficulty of attribution, especially for a drawing, made and continues to make fraudulent representations of his work hard to police.