Rare Book Monthly

Articles - June - 2020 Issue

Revising Appraisals due to the Coronavirus

Valuation in uncertain times

Valuation in uncertain times

A  recent inquiry from a dealer-appraiser raised a pertinent question; with significant changes in the world over the past year, have rare book, manuscript, and map appraisals issued in the mid-2019s ought/should they be revised?

 

There are two answers.

 

Valuation is generally determined on long term trends but when there are tectonic shifts and if auction prices hew high and low, should appraisals reflect short term reality?

 

Research members have access to tools on the brown toolbar under Upcoming Auctions.  Here are the choices:

 

Auction Home

Auction Calendar

Auction House List

Recent Auction Update[s]

Recent Reported Auction Results

Trends in Book Auction Prices

Charts and Analyses

Rare Book Top 500 Auctions

 

Charts and Analyses is a link to a series of year by year charts accessible while signed in as a paid member:

 

Chart 1 - Auction House Results, Including Sell-through Rates, Sales Above and Below Estimates.

Chart 2 - Auction House Results, Sell-through Rates, Sales Above and Below Estimates, by Month.

Chart 3 - Auction House Sales by Price, Including Medians and Averages, in U.S. Dollars.

Chart 4 - Auction House Sales by Price in Original Currencies.

Chart 5 - Auction Prices by Month, Including Medians and Averages, in U.S. Dollars.

Chart 6 - Auction Prices by Month, Including Medians and Averages, in Original Currencies.

Chart 7 - Percentage of Lots Sold, and Sold Above and Below Estimates, by Month.

 

Using these charts it’s possible to examine 2019 month by month to compare the first 4 months [soon 5 months] of 2020 whether the market is holding firm.

 

And the answers are yes, yes, and not quite.

 

The pace of auction lots are holding, that said, the year over year norm has been that that number increases about 3.5% a year.  So, because there is no current gain that’s a bit unusual.

 

The percentage of lots sold is also vital and it is a reasonable conjecture that the percentage of lots sold would be declining given the Covid crisis.  This year the sell through rate has actually inched up from 80.4% in 2019 to 82.4% in 2020.  This has been unexpected and frequently commented on in the Weekly Auction Updates.

 

And now for the not quite – and this may be meaningful.  The median lot price is running soft.  This is unsurprising because auction houses world-wide carefully manage low estimates to ensure success for all parties.  So it’s logical that in this Covid period estimates are trending down.  And said another way, when/if estimates begin to trend higher this will be a forward indicator that the auction market is believing the worst is behind us.  Fingers crossed!

 

And a reminder that research members can also chart market expectations for any material in the Transaction Database.  To do this run your search, select relevant records by marking them, then run the Get Current Estimate for a custom prepared report in 15 seconds.

 

Our best to you all.

 

Rare Book Monthly

  • 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.
  • ALDE, Mar. 11: AUGUSTIN (Saint). De civitate Dei. Rome, Konrad Sweynheym et Arnold Pannartz, 1470. €20,000 - €30,000.
    ALDE, Mar. 11: [REGNART (LE LIVRE DE)]. [Le] Docteur en malice, maistre Regnard, demonstrant les ruzes et cautelles qu'il use envers les personnes… Rouen, 1550. €20,000 - €30,000.
    ALDE, Mar. 11: TRITHÈME (JEAN). Polygraphie et universelle escriture cabalistique. Paris, [Benoît Prévost pour] Jacques Kerver, 1561. €8,000 - €10,000.
    ALDE, Mar. 11: CAUS (SALOMON DE). La Perspective, avec la raison des ombres et des miroirs. Londres, John Norton, 1612.
    ALDE, Mar. 11: NICERON (JEAN-FRANÇOIS). La Perspective curieuse ou magie artificielle des effets merveilleux de l'optique. Paris, Pierre Billaine, 1638. €6,000 - €8,000.
    ALDE, Mar. 11: VONTET (JACQUES). L’Art de trancher la viande et toute sorte de fruits… S.l.n.d. [probablement Lyon, vers 1647]. €20,000 - €30,000.
    ALDE, Mar. 11: HUGO (VICTOR). [Paysage spectral avec une église], [vers 1837]. €20,000 - €30,000.
    ALDE, Mar. 11: [HERVEY DE SAINT-DENYS (LÉON D')]. Les Rêves et les Moyens de les diriger. Observations pratiques. Paris, Amyot, 1867. €3,000 - €4,000.
    ALDE, Mar. 11: GACHET (PAUL-FERDINAND). Les Chats de Gachet (Manuscrit). S.d. [avant mai 1873]. €6,000 - €8,000.
    ALDE, Mar. 11: [REDON (ODILON)]. PICARD (EDMOND). Le Juré. Monodrame en cinq actes… Bruxelles, Mme veuve Monnom, 1887. €7,000 - €9,000.
    ALDE, Mar. 11: [TOULOUSE-LAUTREC (HENRI DE) ET HENRI-GABRIEL IBELS]. MONTORGUEIL (GEORGES). Le Café-concert. Paris, [1893]. €4,000 - €5,000.
    ALDE, Mar. 11: [TERRY (EMILIO)]. Projet de fontaine. Dessin original au stylo et à l'encre noire. 1938. €2,000 - €3,000.

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