The weekly auction reports, introduced a year ago, have been revised. Members who have signed up for the free weekly reports will see a revised report when they receive the next issue on Sunday evening. Casual observers can see the same reports in the Upcoming Auctions section of AE by selecting Recent Weekly Auction Reports. New reports are emailed Sunday evenings at 9:00 pm PST and posted in the Upcoming Auctions section at the same time. A link to sign-up is provided at the end of this article.
The revised report, for those who look into the details of specific auctions by selecting Click Here to View Top Ten Lots by Sale Price, will find four new fields highlighted in yellow in the auction summary that provide detailed information about overall performance. Buyers logically focus on specific lots but all items offered are also part of specific events and their overall performance varies widely from house to house, from event to event. Deconstructing results provides evidence of the current market as well as clues to how each auction approaches their business. These new fields provide more information about these differences.
Under the umbrella of 'auction' - variation between houses is the norm, but houses tend to be internally consistent even as they adjust to changing circumstances - so understanding how they did provides evidence about how they'll do. In many cases the past is proscriptive. About this you'll have your own opinion. In recognizing the changes that houses make you'll gain insight into how they view the market. Because auctions provide a steady drumbeat of sales there's a close to real time continuum of data that provides the best evidence available about the current state of the market. But you do have to sort it out yourself because the book business is a braided tapestry, 19th century fiction a world apart from 18th century science, 20th century poetry several time zones away from early travel and voyages.
In issuing weekly reports we have for the past year focused on success rates, that is the lots sold. The market is recovered sufficiently that we can more clearly identify the proportion of lots unsold and add an important statistic: total sales as a % of high estimate. This is a telling number.
Houses that accept or themselves impose reserves above current market value will tend to have a lower percentage of lots sold and also achieve a lower percentage of total receipts as measured by Total Sales as a % of High Estimate. If reserves are high fewer lots will sell and overall performance, as measured by total sales divided by the total high estimate, be lower. It may sound complicated but it reduces itself to a simple number.
A sale and the market will appear to be in balance when an auction achieves 100% of the high estimate. In a rising market that percentage will tend to be above 100%, in a declining market below. This said, these statistics can only be applied to auctions as a group. Specific sales will often be subject to random events that increase or decrease revenue. But taken together, these numbers provide a riveting picture of a selling channel constantly in flux, adjusting to changing demand.
Momentum, the rate of change and its implication for future pricing, is the subject of our ongoing study.
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Pietro Aquila, Psyche and Proserpina,1690. Starting price 140€
Gonnelli: Jacques Gamelin, Memento homo quia pulvis es et in pulverem reverteris, 1779. Starting price 300€
Gonnelli: Giorgio Ghisi, The final Judgement, 1680. Starting price 480€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli Goya y Lucientes Francisco, Los Proverbios.1877. Starting price 1000 €
Gonnelli: Domenico Peruzzini, Long bearded old man, 1660. Starting price 2200€
Gonnelli: Enea Vico, Leda and the Swan,1542. Starting price 140€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Andrea Del Sarto [school of], San Giovanni Battista, 1570. Starting price 25000€
Gonnelli: Carlo Maratta, Virgin Mary and Jesus, 1660. Starting Price 1200€
Gonnelli: Louis Brion de La Tour, Sphére de Copernic Sphere de Ptolemée / Le Systême de Ptolemée. Le Systême de Ticho-Brahe…, 1766. Starting price 180€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Marc’Antonio Dal Re, Ville di Delizia o Siano Palaggi Camparecci nello Stato di Milano Divise in Sei Tomi Con espressevi le Piante…, Tomo Primo, 1726. Starting price 7000€
Gonnelli: Katsushika Hokusai, Bird on a branch, 1843. Starting price 100€
Dominic Winter, May 14: Taylor (John). All the Workes of John Taylor the Water-Poet..., 1630. £1,000-1,500
Dominic Winter, May 14: Pierpont Morgan Collection. Catalogue of the Morgan Collection of Chinese Porcelains, 1904 & 1906. £2,000-3,000
Swann, May 15: Lot 4: Helena Bochoráková-Dittrichová, Z Mého Detství Drevoryty, Prague: Obzina, 1929. First trade edition, signed by the artist. $4,000 to $6,000.
Swann, May 15: Lot 10: Nancy Cunard, Negro Anthology, with a tipped-in A.L.S. to Karl Marx's niece, 1934. First edition. $3,000 to $5,000.
Swann, May 15: Lot 14: Margaret Fuller, Woman in the Nineteenth Century, 1845. First edition. $4,000 to $6,000.
Swann, May 15: Lot 17: Lorraine Hansberry, A Raisin in the Sun, inscribed first edition, 1959. $2,000 to $3,000.
Swann, May 15: Lot 28: Margaret Hill Morris, Private Journal Kept during a Portion of the Revolutionary War, for the Amusement of a Sister, 1836. First edition. $3,000 to $4,000.
Swann, May 15: Lot 38: Anna Sewell, Black Beauty: The Autobiography of a Horse, 1877. First edition. $3,000 to $5,000.
Swann, May 15: Lot 43: Gertrude Stein, Portrait of Mabel Dodge at the Villa Curonia, signed presentation copy with photograph of Stein, 1912. First edition. $8,000 to $12,000.
Swann, May 15: Lot 48: Virginia Woolf, To the Lighthouse, first edition in the scarce dust jacket, 1927. $6,000 to $8,000.
Swann, May 15: Lot 54: Katherine Dunham, large archive of material from her attorney, 1951-53. $20,000 to $30,000.
Swann, May 15: Lot 55: Margaret Fuller Signed Autograph Letter, New York City, 1846. $3,000 to $5,000.
Swann, May 15: Lot 92: Sonia Delaunay, illus. & Tristan Tzara, Juste Present, deluxe edition with original gouache, 1961. $20,000 to $25,000.
Swann, May 15: Lot 93: Flor Garduño, The Sonnets of Shakespeare, 2006. Limited edition. $6,000 to $8,000.
Sotheby's Sell Your Fine Books & Manuscripts
Sotheby’s: The Shem Tov Bible, 1312 | A Masterpiece from the Golden Age of Spain. Sold: 6,960,000 USD
Sotheby’s: Ten Commandments Tablet, 300-800 CE | One of humanity's earliest and most enduring moral codes. Sold: 5,040,000 USD
Sotheby’s: William Blake | Songs of Innocence and of Experience. Sold: 4,320,000 USD
Sotheby’s: The Declaration of Independence | The Holt printing, the only copy in private hands. Sold: 3,360,000 USD
Sotheby's Sell Your Fine Books & Manuscripts
Sotheby’s: Thomas Taylor | The original cover art for Harry Potter and the Philosopher's Stone. Sold: 1,920,000 USD
Sotheby’s: Machiavelli | Il Principe, a previously unrecorded copy of the book where modern political thought began. Sold: 576,000 GBP
Sotheby’s: Leonardo da Vinci | Trattato della pittura, ca. 1639, a very fine pre-publication manuscript. Sold: 381,000 GBP
Sotheby’s: Henri Matisse | Jazz, Paris 1947, the complete portfolio. Sold: 312,000 EUR