Sell your books — Le Chef-d'Œuvre Inconnu
« If a book has immense sentimental value but no market value, I'll tell you. If a treasure is hiding under the dust, I'll honour it. »
Selling a library is rarely an easy decision. Whether it’s a succession, a move, or simply the need to make space, you deserve to be accompanied with respect, transparency, and no pressure. Here’s how I work.
Why sell to The Keeper
Large chains treat books as goods. Flea markets dump them. I do something else: I look at each volume as an object that has crossed time, and that deserves to continue its journey.
My eye is trained in museum studies (palaeography, representation of death in 15th-century sculpture). That means before offering you a price, I take the time to understand what you’re entrusting me with: the edition, the provenance, the condition, the actual rarity. Not a rough estimate in the hallway.
And above all, I’m not in a hurry. Neither are you. If we need to come back a second time, we will.
The process, step by step
Four steps, in this order, no surprises.
- Initial contact — you write to me (form below, coming soon, or directly by email/phone) with a few words about what you have: estimated number of volumes, themes, general condition, context (succession, move, decluttering).
- On-site visit — I come to your place, free of charge in the Lille metropolitan area. I take the time needed to examine the books that might have value. You stay alongside me if you wish — many questions find their answer in conversation.
- Purchase proposal with tailored contract — depending on your situation, I offer an outright purchase, a selective acquisition (I buy only certain titles), a consignment (I sell on your behalf, we share), or advice for an auction sale if more relevant. The contract is written, clear, no hidden clauses.
- The choice is yours — you decide. You can take time to think, compare with another estimate, or simply decline. No insistence.
Successions and moves
A succession is rarely the moment when one feels like dealing with a library. I know. My interventions in this context are carried out with discretion and efficiency.
For a move, the tempo is different — often you have to act fast. I can intervene within 48 to 72 hours in the Lille metropolitan area, and organise travel for metropolitan France depending on the volume.
In both cases, I can work with your notary, your estate agent, or simply with you, no middleman. The goal isn’t to add complexity to an already difficult moment, but to remove it.
Transparency on prices
Let me be clear about what a fair price is.
I don’t pay off mortgages, but a fair tribute that recognises the object’s value while allowing me to carry on my work of preservation — conservation, light restoration, finding serious buyers. My goal isn’t to make a fortune at your expense, but to ensure a rare book doesn’t end up pulped.
If a piece turns out to have exceptional value, I’ll tell you and direct you, if necessary, toward an auction sale, even if that means losing the purchase. It’s a matter of respect — for you, and for the books.
What we buy
The list is never exhaustive — always ask. As a guide:
- Antique books (printed before 1900), bound or paperback
- 20th-century first editions (literature, humanities, fine arts)
- Coherent themed collections (Northern France regional studies, French history, philosophy, antique medicine, etc.)
- Engravings, lithographs, prints
- Manuscripts, autograph letters, notebooks
- Signed books (depending on the author and the quality of the dedication)
- Quality contemporary illustrated and artist’s books
If you’re not sure, send me a few photos before throwing anything away.
What we don’t buy
Out of honesty, here are the cases where I’ll redirect you elsewhere:
- Recent mass-market books (paperbacks, post-2000 bestsellers)
- Large-format encyclopaedias from the 70s and 80s (very little demand)
- Books in poor condition beyond restoration (damp, deep mould, massive missing pages)
- School courses, dated university textbooks
These books deserve another life: flea markets, charity shops, recycling centres, donations to libraries, or simply paper recycling. I can recommend local options if you wish.
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Request a valuation
Someone is going to help you. Tell me about your situation — La Gardienne will get back to you within 48 hours.
Frequently asked questions
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How long does it take to value a library?
From a few hours to a full day depending on volume. For around a hundred books, allow half a day on site; for several hundred, we often split across two visits.
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How does an on-site visit work?
We agree on a slot that suits you (weekday or Saturday). On arrival, we first take the time to understand the library and its history — only then do we look at each book individually.
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Do you also buy mixed libraries (antique and recent books)?
Yes. We take what fits our catalogue and point you towards organisations that will take good care of the rest (Emmaüs, libraries).
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What payment methods do you offer?
Bank transfer (most common), cheque, or cash for transactions up to €1,000. Payment is immediate once we agree — no waiting, no empty promises.
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Should I sort the books before you come?
Please don't. An apparently ordinary book can turn out to be a rare edition under an expert eye. Leave the libraries as they are — we handle the sorting.
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What if I decide not to sell after the valuation?
No commitment on your side. The verbal valuation is free — you keep the estimate in mind, and we leave with no pressure whatsoever. Total discretion.