In 2005, 29% sold for less than the low estimate, versus 27% in 2004. This 48%-29% ratio is a bit misleading, since unsold items are also items that were unable to attain the minimum bid. If these are added to items sold below the minimum, below minimum offers exceeded above maximum ones by a ratio of 48%-35%. Last year, it was 45%-37%. It would appear that anticipated selling prices in 2005 rose faster than did actual prices.
Results from individual auction houses are always intriguing, though the data may be more of a curiosity then meaningful. For example, high median prices primarily reflect the quality of material handled, rather than the performance of the auction house. However, this information can help a buyer determine which houses are most likely to offer items they can afford, or inform the seller which ones are appropriate to handle the level of books they wish to sell.
In 2005, as in 2004, the highest prices were achieved by the various Christie's and Sotheby's locations. These two houses have long dominated the very high-end book market, and 2005 was no exception. Christie's Paris auction had both the highest median and average sale, just as they did in 2004. Their median price was $6,696, down from $7,344 last year, but their average price rose from $22,391 to $24,899. Sotheby's New York just missed the top with a median of $6,600. Ten of the twelve highest medians were held by the five Christie's and five Sotheby's locations. Only Dorothy Sloan, of Austin, Texas, with a median price of $1,725, also broke into the top ten. The lowest for the big two was Christie's of London-South Kensington, still at a healthy $1,310. Four other houses had a median sale price over $1,000: Skinner's of Bolton, Massachusetts, Bonham's San Francisco, and Swann's and Doyle's of New York. Only four houses had a median sale of under $100, a sign that the level of material sold at traditional auctions still remains well above that of eBay.
The most active of houses was Bloomsbury's of London, with almost 15,000 lots. That was about 600 more than runner-up Christie's, though their number came across all five locations. Of course, Christie's and Sotheby's do enormous volumes of other material, but we are including only books and book-related items.
Much more information can be gleaned from the data made available to the public by the Americana Exchange. However, the AE cautions against drawing any wrong inferences from the data. For example, figures about selling over and under maximum and minimum estimates say more about the way the house estimates than about their success at selling. Some houses tend to estimate low, others high. It is a double-edged sword. Estimating low can encourage more people to bid, a positive, but may also encourage them to bid low, a negative. However, this information can be useful to the bidder in determining how to bid at a particular house. For example, a bid below estimate is less likely to be successful at a house that rarely sells below the low estimate than at one which often does.
Swann Maps & Atlases, Natural History & Color Plate Books December 9, 2025
Swann, Dec. 9: Lot 156: Cornelis de Jode, Americae pars Borealis, double-page engraved map of North America, Antwerp, 1593.
Swann, Dec. 9: Lot 206: John and Alexander Walker, Map of the United States, London and Liverpool, 1827.
Swann, Dec. 9: Lot 223: Abraham Ortelius, Typus Orbis Terrarum, hand-colored double-page engraved world map, Antwerp, 1575.
Swann Maps & Atlases, Natural History & Color Plate Books December 9, 2025
Swann, Dec. 9: Lot 233: Aaron Arrowsmith, Chart of the World, oversize engraved map on 8 sheets, London, 1790 (circa 1800).
Swann, Dec. 9: Lot 239: Fielding Lucas, A General Atlas, 81 engraved maps and diagrams, Baltimore, 1823.
Swann, Dec. 9: Lot 240: Anthony Finley, A New American Atlas, 15 maps engraved by james hamilton young on 14 double-page sheets, Philadelphia, 1826.
Swann Maps & Atlases, Natural History & Color Plate Books December 9, 2025
Swann, Dec. 9: Lot 263: John Bachmann, Panorama of the Seat of War, portfolio of 4 double-page chromolithographed panoramic maps, New York, 1861.
Swann, Dec. 9: Lot 265: Sebastian Münster, Cosmographei, Basel: Sebastian Henricpetri, 1558.
Swann, Dec. 9: Lot 271: Abraham Ortelius, Epitome Theatri Orteliani, Antwerp: Johann Baptist Vrients, 1601.
Swann Maps & Atlases, Natural History & Color Plate Books December 9, 2025
Swann, Dec. 9: Lot 283: Joris van Spilbergen, Speculum Orientalis Occidentalisque Indiae, Leiden: Nicolaus van Geelkercken for Jodocus Hondius, 1619.
Swann, Dec. 9: Lot 285: Levinus Hulsius, Achtzehender Theil der Newen Welt, 14 engraved folding maps, Frankfurt: Johann Frederick Weiss, 1623.
Swann, Dec. 9: Lot 341: John James Audubon, Carolina Parrot, Plate 26, London, 1827.
Sotheby’s Book Week December 9-17, 2025
Sotheby’s, Dec. 11: Darwin and Wallace. On the Tendency of Species to form Varieties..., [in:] Journal of the Proceedings of the Linnean Society, Vol. III, No. 9., 1858, Darwin announces the theory of natural selection. £100,000 to £150,000.
Sotheby’s, Dec. 11: J.K. Rowling. Harry Potter and the Philosopher's Stone, 1997, first edition, hardback issue, inscribed by the author pre-publication. £100,000 to £150,000.
Sotheby’s, Dec. 11: Wolfgang Amadeus Mozart. Autograph sketchleaf including a probable draft for the E flat Piano Quartet, K.493, 1786. £150,000 to £200,000.
Sotheby’s, Dec. 12: Hooke, Robert. Micrographia: or some Physiological Descriptions of Minute Bodies made by Magnifying Glasses. London: James Allestry for the Royal Society, 1667. $12,000 to $15,000.
Sotheby’s, Dec. 12: Chappuzeau, Samuel. The history of jewels, first edition in English. London: T.N. for Hobart Kemp, 1671. $12,000 to $18,000.
Sotheby’s, Dec. 12: Sowerby, James. Exotic Mineralogy, containing his most realistic mineral depictions, London: Benjamin Meredith, 1811, Arding and Merrett, 1817. $5,000 to $7,000.