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 [email protected]. 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.
Aste Bolaffi, June 17-18: Galileo Galilei. Dialogo sopra i due massimi sistemi del mondo tolemaico, e copernicano. Firenze, 1632
Aste Bolaffi, June 17-18: Saverio Manetti. Storia naturale degli uccelli. Firenze, 1771-76
Aste Bolaffi, June 17-18: Fortunato Depero. Depero futurista. Rovereto, 1927
Aste Bolaffi, June 17-18: Nicolas Visscher. Atlas minor sive totius orbis terrarum contracta delineat ex conatibus. Amsterdam, circa 1649-95
Aste Bolaffi, June 17-18: Andreas Vesalius. Anatomia. Addita nunc. Antiquorum Anatome. Venezia, 1604
Aste Bolaffi, June 17-18: Tristan Tzara and Salvador Dalì. Grains et Issues. Parigi, 1935
June 25, 2026
Doyle, June 25: Houdini's biography, boldly signed. $3,000 to $5,000.
Doyle, June 25: A volume from Abraham Lincoln's library, signed just before heading to Washington for his inauguration. $20,000 to $30,000.
Doyle, June 25: A very early Confederate recruiting manual belonging to the chief commissary in Lee's Army. $600 to $800.
Doyle, June 25: Rare hand-colored lithographs of the life of Napoleon. $20,000 to $30,000.
Doyle, June 25: The "Holster Atlas" of the American Revolution. $5,000 to $8,000.
Doyle, June 25: Jewish ceremonies in fine hand-colored engravings. $7,000 to $10,000.
Doyle, June 25: A very rare work on Turkish military costume. $1,000 to $1,500.
June 25, 2026
Doyle, June 25: The most important illustrated work on the Mexican-American War. $10,000 to $15,000.
Doyle, June 25: The finest illustrated book on Afghanistan. $10,000 to $15,000.
Doyle, June 25: Henry Justice Ford St. George rescues the Princess from the horrible Dragon. $2,000 to $3,000.
Doyle, June 25: A rare work of Prussian Army uniforms under Frederick William II, with exquisite hand-colored engravings. $800 to $1,200.
Doyle, June 25: Lenny Bruce typed letter signed to a Village bohemian during his obscenity trials, with a manuscript note and drawing. $300 to $500.
Doyle, June 25: Schiff's scarce Shanghai Sketchbook. $300 to $500.
Doyle, June 25: The first accurate published representation of the American flag. $2,000 to $4,000.
Old World Auctions (June 17): Lot 123. Celebrate 250 Years of Independence with Original Stars and Stripes (1790) Est. $1,400 - $1,700
Old World Auctions (June 17): Lot 20. Keulen's Spectacular Chart of the World Featuring California as an Island (1728) Est. $12,000 - $15,000
Old World Auctions (June 17): Lot 42. Schedel's Ancient World Map with Fantastic Humanoid Creatures (1493) Est. $14,000 - $17,000
Old World Auctions (June 17): Lot 591. Matching Set of 3 Stunning Globe Gores of Eastern Asia from Coronelli's 3.5 Foot Globe (1688) Est. $5,500 - $7,000
Old World Auctions (June 17): Lot 9. Speed's Popular World Map with Allegorical Representations of the Elements (1651) Est. $14,000 - $17,000
Old World Auctions (June 17): Lot 168. First Separate Map of Kansas & Nebraska Territories (1854) Est. $5,500 - $7,000
Old World Auctions (June 17): Lot 43. Only Macrobius Map with Britain Attached to Europe (1515) Est. $800 - $950
Old World Auctions (June 17): Lot 250. Rare Map of Boston and One of the Earliest Maps of the Revolutionary War (1775) Est. $2,000 - $2,300
Old World Auctions (June 17): Lot 79. Schenk's Uncommon Map Featuring Two Figurative Title Cartouches (1696) Est. $1,200 - $1,500
Old World Auctions (June 17): Lot 681. Hand-Colored Image of the Annunciation to the Shepherds (1502) Est. $800 - $950
Sotheby's Book Week 2 June - 9 July
Sotheby’s, June 25: Smith, Adam. The Wealth of Nations, on its 250th anniversary. $180,000 to $250,000.
Sotheby’s, June 17: Fontana, Lucio. Concetto Spaziale. 1967. Leporello en papier doré. Bel exemplaire signé. €4,000 to $€,000.
Sotheby’s, June 25: Fitzgerald, F. Scott. "So we beat on, boats against the current, borne back ceaselessly into the past”. $150,000 to $200,000.
Sotheby’s, June 25: Washington, George (as First President). Washington decries “an ostentatious imitation, or mimickry of Royalty” in his Presidency. $250,000 to $500,000.
Sotheby’s, June 17: Lope de Vega. Rare manuscrit autographe signé de la préface dédicatoire de "El Cardenal de Belen" (le cardinal de Bethléem), pièce composée en 1610. €40,000 to €60,000.