Sales of Impressionist, modern and surrealist art at rival auctioneers Christie's and Sotheby's saw several pre-sale estimates shattered.
Judd Tully, editor-at-large of Art and Auction magazine, said Thursday that the two big auction houses had had "exceptionally strong sales."
"The art market seems to confound all other financial indicators," he said. "There is a lot of money sloshing around, and it's very global."
Christie's said "new and established buyers from 19 countries" snapped up works at a Wednesday sale that saw a portrait by Amedeo Modigliani sold to an anonymous telephone bidder for 26.9 million pounds ($42.1 million), above its top estimate.
Modigliani's 1919 portrait of his lover Jeanne Hebuterne was the highlight of Christie's Impressionist and modern auctions, which raised a total of 136 million pounds ($214 million).
"Apres le dejeuner" by 19th-century Impressionist Berthe Morisot sold for 6.9 million pounds ($10.9 million), almost three times its high estimate and a record price for a female artist at auction.
A day earlier, Pablo Picasso's 1932 work "Woman Sitting Near a Window" — a portrait of the artist's "golden muse," Marie-Therese Walter — fetched 28.6 million pounds ($45 million) at Sotheby's.
In total, Sotheby's Impressionist and modern sales raised 145 million pounds ($228 million).
Both auction houses held separate surrealist sales that brought strong prices for artists including Rene Magritte and Joan Miro.
At Sotheby's, "The Farmer and his Wife," a vivid Miro canvas from 1936 once owned by filmmaker Billy Wilder, sold for just under 5.9 million pounds ($9.3 million).
Salvador Dali's 1943 "Portrait of Mrs. Harrison Williams" — an image of a famous New York socialite who later became Countess Mona Bismarck — sold for just under 2.3 million pounds ($3.6 million).
Works by Egon Schiele and Claude Monet also commanded high prices at the week's auctions, although some high-profile lots failed to meet their reserve prices.
Three works by Schiele raised a higher-than-expected total of 14 million pounds ($22 million) at Sotheby's, with one — "Lovers (Self-portrait With Wally)" — netting just under 7.9 million pounds ($12.4 million), an auction record for a work on paper by the early 20th century Viennese artist.
"There has been a lot of talk about the Impressionist and modern market dying out because of a lack of a material," Tully said. "But when really good property shows up there seems to be a lot of appetite for these works."
Jill Lawless can be reached at http://Twitter.com/JillLawless