
The outbreak of the Second World War greatly slowed the London art market and forced a number of the leading Jewish dealers in Paris to move their businesses to New York. Like the French under Napoleon, the Nazis were extremely acquisitive. In 1940 they created an organization called the ERR (Einsatzstab Reichsleiter Rosenberg). Although the ERR was originally charged with the collection and suppression of âundesirableâ political media, Hermann Göring almost immediately changed its mission to the seizure of private Jewish collections. It confiscated more than 200 French private collections and inflicted forced sales and confiscations on Jews throughout the Reich; tens of thousands of itemsâsome estimates reach the hundreds of thousandsâwere thus seized. Göring made frequent trips to Paris to select the best works for quick sale or for transport to his own expansive personal collection. Legal actions have enabled Holocaust claimants to recover some of this property.
Ironically, the collections in German museums also suffered heavily as a result of Nazi policies. Adolf Hitler was determined to increase the representation of German art in public collections and to expunge from these collections all traces of âdecadentâ art. This caused the deaccessioning of major Italian Old Masters in favor of second-rate German art. There were also disastrous sales of Impressionist and Modernist paintings, many of which were auctioned by Galerie Fischer of Lucerne (Switzerland) for trifling sums.

The New York art market benefited from the Jewish exodus from Europe during the Second World War, succeeding Paris as the most exciting center for modern and contemporary art. Two important refugee dealers were Pierre Rosenberg and Peggy Guggenheim. Art of this Century, Guggenheimâs short-lived gallery, launched the career of Jackson Pollock. The city also acted as a magnet for artists such as Piet Mondrian and Fernand LĂ©ger and for the Surrealists Salvador DalĂ and Max Ernst.
The success of the New York contemporary art market depended upon a substantial number of collectors interested in new art and a complex triangular relationship between art dealers, critics such as Clement Greenberg and Harold Rosenberg, and museums. The greatest of the postwar contemporary art dealers in New York was Leo Castelli. The most important museums were the Museum of Modern Art, the Whitney Museum of American Art, and the Guggenheim Museum, which validated the provenance of works of art and evaluated their significance. Auction houses played an increasingly important role as sellers of contemporary art after 1973, when the auction of 50 pieces from the Pop art collection of American taxicab magnate Robert Scullâsome of which sold at prices 50 times greater than Scull had originally paidâgarnered more than $2.2 million.
The European art market was slow to recover after the Second World War and remained largely dominated by dealers for some time. In 1956 Peter Wilson of Sothebyâs challenged the status quo by offering a guarantee of sale to the vendor of Nicolas Poussinâs Adoration of the Magi. Soon thereafter he employed advertising firm J. Walter Thompson to promote the 1957 auction of Wilhelm Weinbergâs collection of van Goghs and other items, which ultimately sold for nearly ÂŁ327,000 (more than $900,000 at the time).
In what was perhaps his most masterful coup, Wilson recast auctions as glamorous celebrity-filled evening events. He initiated this approach in order to attract private buyers to the 1958 sale of Impressionist and Modernist paintings collected by Jakob Goldschmidt, a financier who had fled Germany in the early days of the Nazi regime and later settled in New York. Wilsonâs strategy proved successful: the auction broke the sales records for the price of an individual painting and for a single event.
In 1964 Sothebyâs acquired Parke-Bernet, the largest American fine arts auction house, creating a bridgehead from which to launch its global expansion. During the rest of the 1960s and the â70s, Sothebyâs grew from a London-based firm of auctioneers into an international firm with branches in the Americas, East Asia, Australia, and continental Europe. Wilson was quick to capitalize on new technology, introducing ever more innovations, such as telephone bidding and, at a charity auction in 1966, satellite links. Sales catalogs became more accessible, and the publication of presale estimates was introduced to encourage private buyers.

Christieâs was slow to incorporate these innovations, although the firmâs superior contacts with the British aristocracy led to a number of milestone sales. Many of these were of Old Masters, as in the 1970 sale of VelĂĄzquezâs Juan de Pareja, the first painting to fetch more than ÂŁ1 million. This was significantly the result of competition between American museumsâmost notably the Getty Museum near Los Angeles, the National Gallery in Washington, D.C., and the Metropolitan Museum in New Yorkâand reflected the postwar importance of museums in art valuation.
Another significant feature of the changing auction market in the 1960s and â70s was the diversification of collectibles. Victorian paintings and furniture enjoyed such a significant revival that Sothebyâs opened a secondary auction house in London, Sothebyâs Belgravia, specializing in Victoriana. In New York demand rose for Art Nouveau, Art Deco, and photography. Collecting was popularized by auctioneersâ road shows, television programs, and the Pop art movement, which made contemporary art seem more accessible.
The art market itself also became more accessible during this period. Beginning in 1968, the Art Sales Index brought auction prices into the public domain. Books such as Gerald Reitlingerâs Economics of Taste (1960), and later Robin Duthyâs The Successful Investor (1986), suggested that art prices were susceptible to financial analysis.
Following the Second World War, China, Japan, and Korea came to have a major impact on traditional art market centers such as London and New York. These countries also developed increasingly important local art markets.
For many years Hong Kong dominated the art market in East Asia. The cityâs importance as an art center dates from 1949, when dealers from Guangzhou (Canton), Beijing, and Shanghai fled there following the proclamation of the Peopleâs Republic of China and established the now-famous Hollywood Road as an antiques center. The former British crown colony was the principal conduit for business with the West for the remainder of the 20th century. Its primacy as a market center was subsequently challenged by increasing openness in mainland China and by the development of auction houses in cities such as Beijing that allowed buyers and their agents to deal more directly with sellers.
As noted below, Japanese buyers played a decisive role during the late 1980s in fueling the Impressionist and Post-Impressionist boom. However, within Japan itself a culture of discretion and protectionism inhibited the development of an international art market on Western lines except in partnership with existing Japanese organizations such as the department stores Mitsukoshi and Seibu.
Korea was somewhat slower to develop as an art market center, but during the 1990s South Korean collectors played an increasingly significant role in the East Asian art market. By the close of the 20th century, one of the most important private collectors of contemporary British art was the South Korean businessman C.I. Kim.