AE Current Value converts old prices into today's values
By Bruce McKinney
I've seen the future and can report it's exciting. Well, this isn't exactly Martin Luther King saying "I've seen the promised land" but it is part of the future of book valuation nevertheless and it is easy, fast and thought provoking. This month we introduce automated current pricing in the AED. For those who have wondered how or why a 1923 auction record is relevant to book valuation today I have only one word to say, HELLO.
For every book that makes the front page of the New York Times as "the long lost copy of ...." that is thought to be worth millions there are in fact millions of books that are interesting but whose values are much harder to understand. For all the books that don't make it to the front page of the Times there is now AE's Adjusted Current Valuation.
Wright Howes, the Chicago bookman, successfully created a flexible grading system 51 years ago and applied it to 10,520 titles in the Americana field in his book collector's guide: Howes' USiana. The beauty of his system was that his valuations were relative and so remained useful even as valuations changed. His book could not account for change in relative valuation but such changes became meaningful only over decades.
This month, in the AED, it now becomes possible to search for specific titles and editions and to select records that simply by selecting GET CURRENT ESTIMATE, immediately adjust all selected priced records to current value, and then average them for a composite current valuation, a generally better indicator of value than any single record. Then, if any records seem inappropriately high or low we provide links to each underlying record and the option to delete such records from the group. You can then recalculate composite value a second time.
This is not going to tell you what your book is precisely worth but it is going to give you a reasonable idea of its value. About 80% of all books will fall within 15% of the median prices. For books at both extremes the estimates will be less accurate but nevertheless helpful. Most people want to know if their book is valuable. This will tell you that.
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.
Heritage Auctions Rare Books Signature Auction December 15, 2025
Heritage, Dec. 15: John Donne. Poems, By J. D. With Elegies on the Author's Death. London: M[iles]. F[lesher]. for John Marriot, 1633.
Heritage, Dec. 15: Edgar Rice Burroughs. Tarzan of the Apes.
Heritage, Dec. 15: F. Scott Fitzgerald. Tender is the Night. A Romance.
Heritage, Dec. 15: Jerry Thomas. How to Mix Drinks, or the Bon-Vivant's Companion, Containing Clear and Reliable Directions for Mixing All the Beverages Used in the United States…
Rare Book Hub is now mobile-friendly!
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.
![<b>Sotheby’s, Dec. 11:</b> Darwin and Wallace. On the Tendency of Species to form Varieties..., [in:] <i>Journal of the Proceedings of the Linnean Society,</i> Vol. III, No. 9., 1858, Darwin announces the theory of natural selection. £100,000 to £150,000.](https://ae-files.s3.amazonaws.com/AdvertisementPhotos/00d5fd41-2542-4a80-b119-4886d4b9925f.png "<b>Sotheby’s, Dec. 11:</b> Darwin and Wallace. On the Tendency of Species to form Varieties..., [in:] <i>Journal of the Proceedings of the Linnean Society,</i> Vol. III, No. 9., 1858, Darwin announces the theory of natural selection. £100,000 to £150,000.")
![<b>Heritage, Dec. 15:</b> John Donne. <i>Poems, By J. D. With Elegies on the Author's Death.</i> London: M[iles]. F[lesher]. for John Marriot, 1633.](https://ae-files.s3.amazonaws.com/AdvertisementPhotos/8caddaea-4c1f-47a7-9455-62f53af36e3f.jpg "<b>Heritage, Dec. 15:</b> John Donne. <i>Poems, By J. D. With Elegies on the Author's Death.</i> London: M[iles]. F[lesher]. for John Marriot, 1633.")
