Those are good questions. One way to find out is by carefully reading the higher priced listings, especially listings by dealers who are ABAA members. An ABAA designation still inspires a certain degree of confidence.
Conversely, don’t be misled by sellers who place absurd prices on what your research shows to be more common wares.
Then look how many copies are really listed. Are there over a 100 different copies available? Or, are there really only six copies, but each one listed in a dozen different places? On ADDall you can tell at a glance.
But, ADDallonly tells you what’s listed. It doesn’t tell you what sold or the selling price or how recently.
Next go to eBay and do a search of “completed items” using a variety of key words Search for something that’s identical or close to identical to what is in your hand. Search for look-alikes with good clear photos. Don’t just search in “books,” because “books” is not always the best category to either buy or sell. Search “all categories.” EBay completed items only go back a few months, but that’s far enough to determine if there are a lot of other competing items and interest and success generated.
Americana Exchange the Most Reliable
Finally, do you have a hunch it might be worth north of $100? If that happens frequently subscribe to the Americana Exchange data base.
Americana Exchange is the best, most complete and most reliable estimation of current market value in the book world today. Americana Exchange auction records search (a by- subscription feature) will surface prices realized, comparables, frequency and condition. It’s not infallible, but it is reliable. In a world filled with hype and guess work it’s a very good deal, especially if you’re a seller.
The combination of those three searches will usually result in a fair estimate of current market value.
But sellers don’t just want to get the current market value, they want to get more. Not surprisingly, sellers want top dollar.
Start High
I was fortunate to be born into the antiquarian book business a long time ago and to learn the trade from my parents who were ABAA dealers for 50 years. From my wise elders I learned it is easier to come down from a high price than to go up from a low one.
So a lot of times - no matter what the research says - I will pick a starting price that is, to put it kindly, “optimistic.”
I also learned from my folks that if it’s yours and you only have one copy, it doesn’t matter what the auction records say, or how many copies are listed, all you really need is one (1) buyer who is willing to pay your price.
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Pietro Aquila, Psyche and Proserpina,1690. Starting price 140€
Gonnelli: Jacques Gamelin, Memento homo quia pulvis es et in pulverem reverteris, 1779. Starting price 300€
Gonnelli: Giorgio Ghisi, The final Judgement, 1680. Starting price 480€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli Goya y Lucientes Francisco, Los Proverbios.1877. Starting price 1000 €
Gonnelli: Domenico Peruzzini, Long bearded old man, 1660. Starting price 2200€
Gonnelli: Enea Vico, Leda and the Swan,1542. Starting price 140€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Andrea Del Sarto [school of], San Giovanni Battista, 1570. Starting price 25000€
Gonnelli: Carlo Maratta, Virgin Mary and Jesus, 1660. Starting Price 1200€
Gonnelli: Louis Brion de La Tour, Sphére de Copernic Sphere de Ptolemée / Le Systême de Ptolemée. Le Systême de Ticho-Brahe…, 1766. Starting price 180€
Gonnelli Auction 59 Antique prints, paintings and maps May 20th 2025
Gonnelli: Marc’Antonio Dal Re, Ville di Delizia o Siano Palaggi Camparecci nello Stato di Milano Divise in Sei Tomi Con espressevi le Piante…, Tomo Primo, 1726. Starting price 7000€
Gonnelli: Katsushika Hokusai, Bird on a branch, 1843. Starting price 100€
Ketterer Rare Books Auction May 26th
Ketterer, May 26: Th. McKenney & J. Hall, History of the Indian tribes of North America, 1836-1844. Est: €50,000
Ketterer, May 26:Biblia latina vulgata, manuscript on thin parchment, around 1250. Est: €70,000
Ketterer, May 26: M. Beckmann, Fanferlieschen Schönefüßchen, 1924. Est: €10,000
Ketterer Rare Books Auction May 26th
Ketterer, May 26: A. Ortelius, Theatrum orbis terrarum, 1574. Est: €50,000
Ketterer, May 26: M. S. Merian, Eurcarum ortus, alimentum et paradoxa metamorphosis, 1717-18. Est: €6,000
Ketterer, May 26:PAN, 9 volumes, 1895-1900. Est: €12,000
Ketterer Rare Books Auction May 26th
Ketterer, May 26: Breviarium Romanum, Latin manuscript, 1474. Est: €15,000
Ketterer, May 26: Quran manuscript from the Saadian period, Maghreb, 16th century. Est: €10,000
Ketterer, May 26: E. Hemingway, The old man and the sea, 1952. First edition in first issue jacket. Presentation copy. Est: €3,000
Ketterer Rare Books Auction May 26th
Ketterer, May 26: Flavius Vegetius Renatus, De re militari libri quatuor, 1553. Est: €3,000
Ketterer, May 26: K. Marx, Das Kapital, 1867. Est: €30,000
Ketterer, May 26: Brassaï, Transmutations, 1967. Est: €6,000
Leland Little, May 21: Signed Artist Proof of the Monumental G.O.A.T.: A Tribute to Muhammad Ali.
Leland Little, May 21: Assorted Rare Publications Related to H.P. Lovecraft, Including The Recluse Signed by Vincent Starrett.
Leland Little, May 21: Two Issues of The Vagrant, Including the First Appearance of H.P. Lovecraft's "Dagon" in Number Eleven.
Leland Little, May 21: Rare First Printing of Anne of Green Gables, With ALS from the Author.
Leland Little, May 21: First Edition of Hemingway's The Old Man and the Sea, In First Issue Jacket.
Leland Little, May 21: The Limited Paumanok Edition of The Complete Writings of Walt Whitman.
Leland Little, May 21: Beautifully Bound Limited Flaubert Edition of The Works of Guy de Maupassant.
Leland Little, May 21: First Edition of Bonaparte's Celebrated American Ornithology, With Spectacular Hand-Colored Plates.
Leland Little, May 21: A Rare Complete Set of Jardine's The Naturalist's Library, With Hand-Colored Plates.
Leland Little, May 21: Invitation to the Lincoln-Johnson National Inaugural Ball, March 4th, 1865.
Leland Little, May 21: A Scarce Inscribed First Edition of James Baldwin's Nobody Knows My Name.
Leland Little, May 21: Picasso's Le Goût du Bonheur, Limited Edition.
Sotheby's Sell Your Fine Books & Manuscripts
Sotheby’s: The Shem Tov Bible, 1312 | A Masterpiece from the Golden Age of Spain. Sold: 6,960,000 USD
Sotheby’s: Ten Commandments Tablet, 300-800 CE | One of humanity's earliest and most enduring moral codes. Sold: 5,040,000 USD
Sotheby’s: William Blake | Songs of Innocence and of Experience. Sold: 4,320,000 USD
Sotheby’s: The Declaration of Independence | The Holt printing, the only copy in private hands. Sold: 3,360,000 USD
Sotheby's Sell Your Fine Books & Manuscripts
Sotheby’s: Thomas Taylor | The original cover art for Harry Potter and the Philosopher's Stone. Sold: 1,920,000 USD
Sotheby’s: Machiavelli | Il Principe, a previously unrecorded copy of the book where modern political thought began. Sold: 576,000 GBP
Sotheby’s: Leonardo da Vinci | Trattato della pittura, ca. 1639, a very fine pre-publication manuscript. Sold: 381,000 GBP
Sotheby’s: Henri Matisse | Jazz, Paris 1947, the complete portfolio. Sold: 312,000 EUR