Colin Gleadell points out that this week’s Frieze auctions will be a quiet but important test of the Hirst market:

this week the supply of Hirsts at auction, with no less than 25 examples, is more plentiful than any other artist, including Warhol. The biggest estimate is the £700,000 to £1 million expected at Phillips tomorrow night for a large butterfly painting that looks like a stained glass window, and Phillips has found a third party to guarantee that it will sell. But the rest of the Hirsts are not protected by guarantees. A lozenge shaped butterfly painting that sold for £825,000 at his one-man sale is back on the market with a £600,000 estimate at Christie’s.

Frieze Week: What’s Saatchi Selling? (Telegraph)