Presentation of historical data for the rare book field has been evolving for more years than any book collector can remember because it’s been clear and necessary for more than two hundred years that increasing information adjusts understanding, leading to periodic reconsideration of value. And value is important because institutions, collectors and dealers often make their purchase and disposition decisions based on their current understanding of rarity, importance and value. In the world today where value fluctuates, current valuation is always changing.
In the 19th century books and manuscripts were generally thought of as sometimes valuable but rarely significantly expensive. Old auction and dealer records suggest that the absence of detailed data frequently led to pricing decisions based on cost.
In the late 19th century compilations of auction records began to make it possible to understand scale of interest expressed by re-appearances and prices paid. Inevitably over the ensuing decades of the early 20th century cost basis lost relevance as rarity, significance and condition came to dominate pricing calculations.
During the final quarter of the 20th century several series of annually printed books provided auction records of the few firms then conducting book, manuscript, and map auctions. These records were illustrative but hardly complete for they covered only a few of the auction houses, recorded only ‘sold’ material, truncated lot descriptions and charged high initiation fees for subscriptions leading to their records being overwhelmingly used by dealers while rarely by collectors.
In 2002 the Americana Exchange began to offer an online database of auction records. It promised to cover more auction houses and more auctions. Since then the Americana Exchange, now called Rare Book Hub, has grown to more than 2 billion words and 8.7 million full text records including both sold and unsold lots at auctions worldwide in the categories of rare books, manuscripts, maps and ephemera.
At the same time, listing sites such as Abebooks have become immense alternative free databases from which to ‘intuit’ valuation. Such databases show some listings for rare material and many people, particularly those hoping to confirm higher values, can say I saw it listed [not sold] on Abe for $5,000 while simultaneous auction records almost always show the same material selling in the auction rooms at fractions of that value.
Today the Rare Book Hub Transaction Database is widely used both by acquirers and sellers who have come to understand that asking prices on listing sites too often do not reflect actual value.
To understand current value Rare Book Hub provides visitor and subscription access that provide such data.
So, give it a try. It will be easy to use, quick and highly accurate
If you are currently a new or free member and need help to sign in call us at any hour at 877.323.7273 or 415.823.6678. Alternatively contact me by email at bmckinney@rarebookhub.com. We’ll get you started.
SD Auctions, Apr. 16: Fredrik Kolstø. Aftenstemning ved Kysten. c.1890-t.
SD Auctions, Apr. 16: Knut Yran. OL-plakaten Oslo 1952.
Swann Fine Books Featuring Focus on Women April 23, 2026
Swann, Apr. 23: Thomas Heywood. An Apology for Actors. London: Printed by Nicholas Okes, 1612. $3,000 to $5,000.
Swann, Apr. 23: Illuminated Islamic Devotional Manuscript. 19th century. Approx. 90 leaves with gilt-decorated title and 2 full page miniatures of Mecca and Medina. $800 to $1,200.
Swann, Apr. 23: Antiphonal in Latin. Manuscript on Parchment. Cologne, early 16th century. $7,000 to $9,000.
Swann Fine Books Featuring Focus on Women April 23, 2026
Swann, Apr. 23: Mohammed ibn Jafir Albategnius. De Scientia Stellarum Liber. Bologna: Victor Benati, 1645. $8,000 to $12,000.
Swann, Apr. 23: Frank Herbert. Dune. Fine First Edition. Philadelphia: Chilton Books, 1965. $5,000 to $7,000.
Swann, Apr. 23: William Shakespeare. Five Plays from the Second Folio. London: Thomas Cotes for Robert Allot, 1632. $6,000 to $8,000.
Swann Fine Books Featuring Focus on Women April 23, 2026
Swann, Apr. 23: John Steinbeck. Of Mice and Men. New York: Covici-Friede, 1937. First edition, first issue. $800 to $1,200.
Swann, Apr. 23: Charles Dickens. A Tale of Two Cities. With an A.L.S. London: Chapman and Hall, 1859. First edition, first issue. $1,200 to $1,800.
Swann, Apr. 23: Ursula K. LeGuin. The Left Hand of Darkness. Inscribed First Edition. New York: Walker and Company, 1969. $800 to $1,200.
Swann Fine Books Featuring Focus on Women April 23, 2026
Swann, Apr. 23: L. Frank Baum & Ruth Plumly Thompson. Five First Canadian editions including Ozma of Oz; The Emerald City of Oz; Glinda of Oz; [and others]. $1,000 to $1,500.
Swann, Apr. 23: Corita Kent. Different Drummer. 1967. Color screenprint; signed "Corita" in pencil on the lower edge. $1,000 to $1,500.
Swann, Apr. 23: Bible in English. Tyndale-Taverner Translation. The Bugge Bible. The Holye Bible. London: Imprinted by John Daye and Willyam Seres, 1549. $1,500 to $2,000.
Sotheby’s Books, Manuscripts & Objects from Three Important Collections Open for Bidding 2-17 April
Sotheby’s, Apr. 2-17: [Guillaume de Lorris and Jean de Meun]. Le Roman de la Rose, [Geneva or Lyons, c.1481], first printed edition of the most important medieval French vernacular poem. £200,000 to £300,000.
Sotheby’s, Apr. 2-17: Castiglione. Il libro del cortegiano. [Venice], April 1528, first edition, in a magnificent binding by Jean Picard for Jean Grolier. £100,000 to £150,000.
Sotheby’s, Apr. 2-17: Jacobus de Cessolis. Schachzabelbuch, Strasbourg, 1483, von der Lasa copy. £50,000 to £70,000.
Sotheby’s, Apr. 2-17: World Championship, 1972. A collection of 84 press photographs of the famed match between Spassky and Fischer. £2,000 to £3,000.
Sotheby’s, Apr. 2-17: Ben Franklin. Autograph letter signed, to Lord Shelburne, British Prime Minister, during peace negotiations, November 1782. £15,000 to £20,000.