Auctioneers are pinning their hopes on "über-collectors" to help London's summer art sales top last year's $1bn (£660m) total when the series kicks off later this month.
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A first edition of the first in the Harry Potter series containing hand drawings and annotations by author JK Rowling has sold at auction for £150,000.
A 1968 oil painting by German artist Gerhard Richter sold for $37 million (£24 million) at Sotheby's contemporary art auction - a new record for a work by a living artist.
A Picasso painting has fetched more than £28.5 million at auction.
"You don't need lots of money to buy works of art that are over 200 years old." This newcomer auctioneer from London has started an online auction of pictures at 25 Blythe Road in Kensington.
A piano used in the classic Bogart and Bergman film Casablanca sold for just over $600,000 yesterday, falling far short of predictions that it could fetch $1 million or more.
The rare drawing went for double its pre-sale expectations
A Gerhard Richter painting owned by Eric Clapton sold on Friday night for £21.3m - more than 30 times what he paid for it in 2001.
A slice of Beatles' history goes on sale next month when the original collage designed by Sir Peter Blake for the insert of the band's Sgt Pepper's Lonely Hearts Club Band is auctioned.
The scene of the FBI's gunfight with the mother of the notorious 1930s gang remains as it was in 1935
The record sale of a Mark Rothko painting helped drive auctioneer Christie's to its most successful first half year, as investors continued to flock to art as a good place to put their cash.
A version of Edvard Munch's classic masterpiece The Scream has fetched a record-breaking $119.9 million (£74 million), making it the most expensive work of art to be sold at auction.
Star performer of Sotheby’s saleroom is the first ever to take a $1m bid
The only privately-owned version of Edvard Munch's classic masterpiece The Scream has gone on show in London for the first time before it is sold at auction in New York.
Official cosmetics add to fragrance and clothing lines in Pop Art's fashion moment