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You inherited an antique book or found a rare volume and want to know its market value? Send 3 to 5 photos via the form below: our bibliophile AI (Mistral Pixtral, hosted in France) analyzes the book, cross-references dozens of sources (BnF, eBay, Vialibri, Artprice), and our expert bookseller reviews the estimate before sending. Response within 24-48 hours, free of charge.
How it works in 4 steps
- Photograph your book — front cover, title page, copyright/colophon page, edges, any visible defects. 3 to 5 photos are enough.
- Fill out the form in under a minute (name, email, city, photos).
- Our AI analyzes the images: title, author, publisher, date, edition, physical condition. It compares against dozens of recent comparables.
- An expert bookseller reviews, adjusts if necessary, and emails you a valuation range with 5 clickable comparables.
Why our appraisal is different
- Radical transparency — we cite every source (eBay sold listings, Drouot via Artprice, Vialibri, BnF catalogue).
- European AI first — Mistral Pixtral (Paris) handles your photos first. Subsidiary fallback to Anthropic or Google Vertex EU under Standard Contractual Clauses.
- Systematic human review — no valuation is sent without bookseller validation.
- Protected data — hosted in France (o2switch), auto-deletion at D+90, full GDPR compliance.
- No obligation — free service, you remain entirely free to decline any purchase offer.
Which books can we appraise
All antique and collectible books: incunabula and 16th-18th century volumes, 19th-20th century first editions, illustrated books, fine bindings, antique cartography, children’s books (Hetzel, Père Castor), scientific works, colonial and Pacific literature, modern manuscripts, signed/inscribed copies. For medieval manuscripts and precious incunabula, we systematically recommend a physical expertise.Appraisal form
Estimation gratuite par IA
Recevez sous 24-48h une estimation indicative générée par notre IA et validée par un libraire-expert.
Frequently Asked Questions
Is this a certified appraisal?
No. This is an indicative market valuation for informational purposes. A certified appraisal requires physical examination by a sworn expert (CNE, SLAM, ILAB, auction house). Our valuation gives you a realistic range to guide your decision.
How long until I receive the valuation?
Within 24 to 48 business hours in most cases. The AI processes your request in minutes, but we always wait for manual validation by a bookseller before sending.
Are my photos kept?
Yes temporarily, on our French servers (o2switch). They are automatically deleted after 90 days. You can request earlier deletion by emailing [email protected].
Am I obligated to sell you the book?
Absolutely not. The service is free and no-strings-attached. If interested, we may offer a physical expertise appointment and a purchase proposal — which you remain free to decline, compare with other opinions (auctioneers, other booksellers), or sell yourself through your preferred channel.
Can the AI be wrong?
Yes, like any AI it may make identification errors (reprint vs. original edition, author attribution, etc.). That’s precisely why we apply systematic human review before any send-out. The lessons of the Aristophil affair (verdict 11 December 2025) remind us to always cross-check multiple opinions before any sale.
