The number and scale of public auctions offering books has reached a level where there are both enough current lots and accumulated auction history to offer a service to provide near-instant estimated valuations and probability of reappearance at auction for many works on paper.
Currently, the Rare Book Hub Transaction History enables users to determine the value of books... one at a time. This is fine for valuing a handful. But for those who must value large collections, in the hundreds and thousands of items, or for those seeking to immediately value even a few dozen books, it is insufficient. To make the process both more efficient and faster, we will soon be introducing the Rare Book Batch Valuation Service — batch processing that will quickly convert lists of holdings into estimates of valuation and rarity.
Auctions have been growing rapidly based on the demand of sellers looking for efficient exits and from buyers preferring to pay market-derived prices. Auction houses constantly receive inquiries from those wishing to sell their books. Batch valuation will turn evaluating those collections into an automated process.
Every category of participation in the field will find this service useful. For collectors, they will have the option to view their collections as they view their holdings in the stock market. Prices change; it’s a given. The Batch Valuation Service will capture the changing everyday reality of these holdings. For dealers who wish to capture the changing dynamic of the market, their inventories can periodically be compared to the ever-adjusting auction market, allowing books to be priced for sale, rather than languishing on shelves, while not being sold for less than fair value.
For institutions, who have never actually known the value of their complete holdings, this service will provide information that enables them to select the appropriate amount of insurance without overpaying. It will also help library management to understand their holdings as valuable assets that need varying scales of protection. For some, they may use batch valuation to assess their separate collections. Their value and costs of ownership may help them to use their space, time, and money more efficiently. Tastes and needs change.
For appraisers, batch valuation can be another tool among the current array of services that complements and enhances their expert opinion, and no doubt institutions and collectors are going to want their perspective.
We call it the Rare Book Batch Valuation Service, but think of it as the future.
We expect to be offering a beta version of this new service to certain paid subscription members around October 1. It will be for those who wish to test the service and participate in the process of fine-tuning and enabling us to better serve the needs of the various constituencies that will benefit from access to batch valuation. We hope to be rolling out the finished product around January 1.
If you are interested in learning more about this service and participating in the trials, please email Tom McKinney at tom@rarebookhub.com. A priority will be given to annual members. Mention your orientation to the field, be it as an auction house, appraiser, dealer, collector, or library.
We’ll need your contact details and then assign an advocate to work with you. We’ll welcome test files from 50 to 500 items.
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Book of Hours.- Heures a lusaige de Romme, printed on vellum, with 14 full-page illuminated miniatures, Paris, N. Higman for J. de Brie, [c.1521]. £20,000-30,000
Forum, Mar. 26: France.- Book of Hours, perhaps Use of the Abbey of Saint-Gildas de Rhuys, with thirteen miniatures surviving from an original cycle of at least twenty, [c. 1430]. £15,000-20,000
Forum, Mar. 26: Milton (John). Paradise lost. A Poem in Ten Books, first edition, Pforzheimer's sixth state, S. Simmons, 1669. £8,000-12,000
Forum, Mar. 26: Blake (William). Illustrations of the Book of Job, one of 215 first issue "Proof" copies, this one of 65 copies on "French" paper, Published by the Author, March 8, 1825 [but March, 1826]. £15,000-20,000
Forum Auctions Fine Books, Manuscripts and Works on Paper 26th March 2026
Forum, Mar. 26: Christie (Agatha). The ABC Murders, first edition, The Crime Club, 1936. £15,000-20,000
Forum, Mar. 26: Halley (Edmund). Astronomiae Cometicae Synopsis, in Philosophical Transactions of the Royal Society, no. 297, pp.1882-99, March 1705. £10,000-15,000
Forum, Mar. 26: Haytham (Ibn al) [known as Alhazen]. Opticae Thesaurus...Item Vitellonis Thuringopoloni libri X..., first edition, Basel, August, 1572. £20,000-30,000
Forum, Mar. 26: Kepler (Johannes). Dioptrice seu demonstratio eorum quae visui & visibilibus propter conspicilla non ita pridem inventa accidunt, first edition, Augsburg, David Frank, 1611. £12,000-18,000
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Botany.- Andrews (H.C.) Coloured Engravings of Heaths, 4 vol. in 2, first edition, [1710,--94]-1802-1809-[1830]. £10,000 - £15,000.
Forum, Mar. 25: Butterflies.- Cramer (Pierre) and Caspar Stoll. De Uitlandsche Kapellen voorkomende in de drie Waereld-Deelen…,, 5 vol., Amsterdam & Utrecht, 1779-91. £8,000 - £12,000.
Forum, Mar. 25: Voyages.- Darwin (Charles) and others. Narrative of the Surveying Voyages of His Majesty's Ships Adventure and Beagle, 3 vol. in 4, including Appendix to vol.2, first edition, 1839. £8,000 - £12,000.
Forum, Mar. 25: Butterflies.- de Graaf (Willem Diederik Vincent). [Inlandsche Kapellen in beeld], 170 fine original watercolours, [Enkhuizen], [1800-40]. £8,000 - £12,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Birds.- Dresser (Henry Eeles). A History of the Birds of Europe, 9 vol., including supplement, first edition, by the author, 1871-96. £6,000 - £8,000.
Forum, Mar. 25: Zoology.- Felines.- Elliot (Daniel Giraud). A Monograph of the Felidæ or Family of the Cats, first edition, for the Subscribers, by the Author, [1878]-1883. £25,000 - £30,000.
Forum, Mar. 25: Birds.- Frisch (Johann Leonard). Vorstellung der Vögel Deutschlandes, 2 vol., first edition, Berlin, Friedr. Wilhelm Birnsteil, [1736]-1763. £40,000 - £60,000.
Forum, Mar. 25: Birds.- Gould (John). The Birds of Great Britain, 5 vol., first edition, by the author, 1862-1873. £30,000 - £40,000.
Forum Auctions Natural History: The remaining stock of Antiquariaat Junk, 1899-2026 25 March 2026
Forum, Mar. 25: Pomology.- France.- Poiteau (A.) Pomologie Française. Recueil des Plus Beaux Fruits cultivés en France, 4 vol., Paris, 1846. £30,000 - £40,000.
Forum, Mar. 25: Botany.- [Robin (Jean)]. Histoire des Plantes, nouvellement trouvées en l'Isle Virgine…,, 1620; with Geoffrey Linocier L'Histoire des plantes, second edition, 1619-20. £3,000 - £4,000.
Forum, Mar. 25: Asia.- Japan.- Siebold (P.F. von). Nippon. Archiv zur Beschreibung von Japan, 7 parts in 6 vol., first edition, Leyden, [1832]-1852. £35,000 - £45,000.
Forum, Mar. 25: Asia.- Valentijn (Francois). Oud en Nieuw Oost-Indiën..., 5 vol. in 8, first edition, Dordrecht [&] Amsterdam, 1724-26. £8,000 - £12,000.
Forum, Mar. 25: Botany.- Australia.- Redouté (P.J.).- Ventenat (Étienne Pierre). Jardin de la Malmaison, 2 vol.,, Paris, 1803-04[-05]. £30,000 - £40,000.