Rare Book Monthly

Articles - August - 2007 Issue

AE Services Part 3: Current Price Estimator

Avest

AE Price Estimator shows upward value trend for a Gutenberg Bible leaf.


By Michael Stillman

This month we look at one of the Americana Exchange's most useful tools, its current price estimator. It updates values of prices in the 1.6 million-plus AE Database (AED) of book records to their current estimated value. It helps you make sense out of old priced records, those which go back as far as 1914. This tool comes with all subscriptions to the AED, which contains over 1.6 million book records from auctions, catalogues, and bibliographies, most of which include prices.

Here is how it works. The AE price estimator takes a price from any given year and updates it to 2007 values, based on typical increases in book values since that year. For example, the average book value has increased fivefold since 1980, fifty times since 1936. So, the current price estimator will take a book that sold for $2 at auction in 1936 and provide a current estimate of around $100. If a book has sold multiple times since 1914, it will provide a current estimate for each year's price, and even average out all of those estimates for a cumulative current estimate for all sales combined.

How accurate is this? We certainly would not claim these are definitive values. The rate of increase is based on what we have seen across the broad spectrum of records within the AED. Therefore, they represent the overall trend in pricing. However, not every book has appreciated at the average rate. In general, the rarest and most historically important texts have appreciated at an above average rate. On the other hand, some fiction and poetry that was popular years ago, but has since fallen out of favor, has stagnated while the world around it rushed forward. What these numbers most clearly do is convert the price the book sold for years ago into today's book dollars. On average, that is the same as current value, but can vary for individual items.

Fortunately, most books appear in the AED multiple times, providing several looks at its value. The averaging feature is very helpful here. Also, looking at price trends based on current estimates is very useful for understanding value. If more recent sales translate to higher current estimates than older ones, this is a good sign that the book is appreciating at a higher than normal rate. It may be a better investment than a book trending in the other direction. Naturally, more recent sales are likely to provide estimates closer to current value than ones from the distant past. Nevertheless, this tool will place even those oldest records into sufficient context to be meaningful.

Obtaining pricing data is one of the most difficult challenges for sellers and buyers alike, yet it is undoubtedly the most important item of practical information each needs. Few collectors can afford to seriously overpay, while sellers don't want to undercharge or price so high they cannot sell. Many people look to online listing sites such as Abebooks for pricing information. The problem with this is that Abe values are asking prices, not selling ones. Often, someone will post a price pulled out of thin air, and then others will follow like lemmings with similar figures. Those books can stay unsold seemingly forever, all sellers locked in to the first posted, unrealistic price. In other situations, prices for similar items can be all over the place, one seller wanting $10, another $100. What is this book worth? Who knows? None of these represent actual sales, and it is not clear which, if any, prices were posted by knowledgeable sellers versus rank amateurs.

Rare Book Monthly

  • <b>Seth Kaller:</b> Leaves from<br>George Washington's Own Draft <br>of His first Inaugural Address. An Extraordinary Rarity!
    <b>Seth Kaller:</b> Declaration of Independence: Benjamin Tyler 1818 - First Print with Facsimile Signatures.
    <b>Seth Kaller:</b> Thomas Jefferson Signed Act of Contress Authorizing Alexander Hamilton to Complete Famous Portland Maine Lighthouse.
    <b>Seth Kaller:</b> Emanuel Leutze. Silk Flag Banner designed by Leutze, created by Tiffany & Co., and presented to Gen. John A. Dix, 1864.
    <b>Seth Kaller:</b> The "greatest of early American maps … a masterpiece" (Corcoran). Thomas Holme.
    <b>Seth Kaller:</b> Lincoln Summons His Cabinet for a Historic Meeting to Discuss Compensated Emancipation.
    <b>Seth Kaller:</b> Albert Einstein. Autograph Letter Signed. Einstein Counsels His Son ... Meaning of Life.
    <b>Seth Kaller:</b> Normal Rockwell. Painting/Drawing Signed. Rockwell's "Barbeshop Quartet", 1936.
    <b>Seth Kaller:</b> Frederick Douglass. Autograph Letter Signed to unknown correspondent. Washington, D.C.
    <b>Seth Kaller:</b> Harry Truman. Autograph Manuscript Notebook for Kansas City Law School Night Class.
    <b>Seth Kaller:</b> Robert E. Lee. Autograph Letter Signed, June 11, 1782. Hours after the Battle of Culpeper Court House, Lee Escapes Again.
    <b>Seth Kaller:</b> George Washington. Letter Signed, as Commander-in-Chief, Continental Army, to Elias Dayton, Headquarters, [Newburgh, N.Y.], June 11, 1782.
  • <b>Swann Auction Galleries Aug 3: Vintage Posters</b>
    <b>Swann Auction Galleries Aug 3:</b><br>Henri de Toulouse-Lautrec,<br><i>The Chap Book</i>, 1896.<br>$20,000 to $30,000.
    <b>Swann Auction Galleries Aug 3:</b><br>Henri de Toulouse-Lautrec,<br><i>Troupe de Mlle Églantine</i>, 1896.<br>$20,000 to $30,000.
    <b>Swann Auction Galleries Aug 3:</b><br>Philippe Henri Noyer, <br><i>Limonade Brault</i>, 1938. <br>$4,000 to $6,000.
    <b>Swann Auction Galleries Aug 3:</b> <br><i>The Great Men of the World</i>,<br>designer unknown, circa 1945-46. <br>$7,000 to $10,000.
    <b>Swann Auction Galleries Aug 3: Vintage Posters</b>
    <b>Swann Auction Galleries Aug 3:</b><br>James Montgomery Flagg,<br><i>Wake Up, America!</i>, 1917.<br>$4,000 to $6,000.
    <b>Swann Auction Galleries Aug 3:</b><br>Alfred F. Burke, <i>Share / Jewish <br>Relief Campaign</i>, circa 1915.<br>$3,000 to $4,000.
    <b>Swann Auction Galleries Aug 3:</b><br>Ludwig Hohlwein, <i>Marke Pkz / <br>Burger - Kehl & Co.</i>, circa 1911. <br>$8,000 to $12,000.
    <b>Swann Auction Galleries Aug 3:</b> <br>Gian Emilio Malerba,<i> E.A. Mele / Modo e Novita per Signora</i>, circa 1900. $7,000 to $10,000.
  • <b>19th Century Shop.</b> KEY, FRANCIS SCOTT. <i>A Celebrated Patriotic Song, the Star Spangled Banner.</i> 1814.
    <b>19th Century Shop.</b> [COLUMBUS, CHRISTOPHER, Amerigo Vespucci ..] Bernardus Albingaunensis .. Dialogo nuperrime edito Genue in 1512.
    <b>19th Century Shop.</b> SHAKESPEARE, WILLIAM. <i>Comedies, Histories, and Tragedies. Published according to the true originall copies,</i> 1632.
    <b>19th Century Shop.</b> (WATKINS, TABER &c.). <i>An album of 32 photographs of the Yosemite and American West Various places</i>, c. 1890s
    <b>19th Century Shop.</b> (BATTLE OF CONCORD.) <i>Powder horn used by Minuteman Oliver Buttrick at the Battle of Concord</i>, April 19, 1775.
    <b>19th Century Shop.</b> (CIVIL WAR.) <i>An Extraordinary Confederate Photograph and Autograph Album of Dr. R. L. C. White</i>, 125 original mounted salt prints. 1859-61.
  • 20 Jul 2016, starts at 1pm EDT, NY
    <b>Bonhams Jul 20: </b> Full scale vintage <i>Sputnik-1</i> EMC/EMI Lab Model, with live transmitter. US$ 10,000-15,000
    <b>Bonhams Jul 20: </b> Flown SOYUZ-3 space navigation indicator with unflown on-ground transformer. <br>US$ 30,000-40,000
    <b>Bonhams Jul 20: </b> Flown on SOYUZ 9<br>An exhaustive manuscript on life in space. [Trans: On-Board Flight Journal for Spacecraft Soyuz-9, 1970]. US$ 6,000-9,000
    <b>Bonhams Jul 20: </b> SOYUZ 18? Flown Navigation Celestial Globe. Soyuz 18 lasted from May 24-July 26, 1975. US$ 30,000-40,000
    20 Jul 2016, starts at 1pm EDT, NY
    <b>Bonhams Jul 20: </b> Flown Space Suit from ISS Expidition 6. Worn by Flight Engineer Don Pettit on his dramitic return to earth. US$ 25,000-35,000
    <b>Bonhams Jul 20: </b> Original Gemini 133P Trainer Assembly Five Part Electrical System & Attitude Maneuver ... US$ 60,000-90,000
    <b>Bonhams Jul 20: </b> Lunar Rover Development. Collection of 11 vintage gelatin silver prints and 4 vintage NASA lithographs. <br>US$ 2,000-3,000.
    <b>Bonhams Jul 20: </b> Lunar Orbiter I. The first image of the earth as seen from the moon. Gelatin silver print. August 23, 1966. US$ 2,500-3,500
    20 Jul 2016, starts at 1pm EDT, NY
    <b>Bonhams Jul 20: </b> Michael Collins' Flown Crew-Signed Apollo 11 Emblem. One of the very few Armstrong signed mission artifacts. US$ 50,000-70,000
    <b>Bonhams Jul 20: </b> Flown Apollo 11 Navigational Chart. Taken to Lunar surface mapping the start of the <br>first manned lunar descent. <br>US$ 25,000-35,000
    <b>Bonhams Jul 20: </b> FFlown Apollo 11 Flight Plan Sheetmission Day One. Some of the first words and data values written by Neil Armstrong. US$ 18,000-25,000
    <b>Bonhams Jul 20: </b> Apollo 12 - Alan Bean in the Ocean of Storms. Signed and inscribed by Bean. <br>US$ 2,000-3,000

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