3 min read · 16 Oct 2025

Portrait of a Dwarf by Francis Bacon sold for $17.49m. Image courtesy of Sotheby's
A work by Francis Bacon, which had a guarantee, was the headline sale at Sotheby's 'Contemporary Evening Auction' on October 16-16 in London.


The star lot was: Francis Bacon, Portrait of a Dwarf (1975), which sold for $17.49m, 118% above its $8m low estimate. The work was backed by a guarantee. It has not been traded before.

The outperformer sold for 315% above its low estimate. Lucy Bull, 9:59 (2021), sold for $1.68m ($404,200 low estimate). It has been traded twice in the past.

Breakdown of results against auction house estimates that are disclosed
14 works were backed by guarantees, including: Francis Bacon, Study for Self-Portrait (1980). It sold for $7.7m, 14% above its $6.74m low estimate. It has not been traded before.
4 works were bought-in, including: Hurvin Anderson's Marlene's Big Sister (2006). Estimated at $672,000 (low) to $941,000 (high) and guaranteed. It has been traded once before.
0 works were withdrawn
All results include the fees and premiums added to the price of a work of art when the auctioneer's hammer falls. Estimates, sale prices and totals are converted into US dollars. Sale prices are compared to the auction house’s low estimate, which do not include premiums.
Guarantees: Sometimes an auction house guarantees to pay a seller for a work, regardless of whether the bidding reaches the reserve price, a figure that is typically confidential.
Bought-in: If there are no bids for a work, or if bidding falls short of the reserve price, the lot is unsold or “bought-in”.
Withdrawn: This happens when a seller decides, for whatever reason, to withdraw a work before the bidding begins.
Premiums: Typically a sliding-scale of charges paid in addition to the hammer price by the buyer, plus any other fees.
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