Provenance records for handmade objects: what to keep and why

A ring, a chair or a cello can outlive its maker and its first owner by a century. What travels with it decides how it is treated along the way: whether an insurer pays out after a loss, whether a buyer trusts the attribution, whether a restorer knows what finish they are looking at.

That record is called provenance. In the art market it usually means a chain of ownership. For a piece made to order today, it starts earlier, with the maker's own record of what was made, from what, and when. That first record is the cheapest to create and the hardest to recreate later.

This guide is for both sides. Makers will find what to record at the bench. Owners will find what to keep, what auction houses and insurers ask for, and how to store records so they are still readable in thirty years.

Key takeaways

• Christie's defines provenance as the documented history of an object's ownership, and says gaps in it may raise questions that need further investigation.
• Auction houses treat receipts, invoices, catalogues, archival records and certificates signed by the artist or an expert as evidence; photographs and inventories support them.
• Insurers such as Chubb suggest a description, a current photo, the receipt and any appraisal for each valuable piece, reviewed regularly.
• The international Object ID standard lists what identifies an object: type, materials and techniques, measurements, inscriptions and markings, distinguishing features, title, subject, date and maker, plus photographs.
• Makers should record materials and their sources, marks, photos of the making and the care and repair history against a permanent serial number.
• The Library of Congress recommends at least two copies of digital photographs in separate places, checked once a year and copied to new media every five years.

What provenance is

Christie's describes provenance as the documented history of an object's ownership, tracing who has owned or exhibited a work from its creation to the present. For a painting with three centuries behind it, that can mean letters, inventories and sale catalogues.

For a handmade object made recently, the most important link is the first one: the maker. A dated record that says who made the piece, what it is made of and when it left the workshop anchors everything that follows. Later links are added as the piece is sold, inherited, valued or repaired.

Provenance is not the same as authenticity, and it is not a guarantee. Christie's notes that attributions are matters of expert opinion and may evolve. Good records make that opinion easier to form and harder to dispute.

Why records matter

Resale

Christie's says provenance supports attribution to a specific maker, gives buyers confidence in the authenticity of a work, and shows whether there are ownership disputes or claims. It also notes that a notable exhibition history or ownership can increase a piece's market value. The reverse holds too: undocumented gaps, in Christie's words, may raise questions that require further investigation.

Insurance

Chubb's guidance on insuring jewellery asks owners to keep, for each piece, a clear description, a current photograph, the original purchase price or receipt, and any appraisal certificates. It recommends a professional appraisal for replacement value, re-appraisal every few years because markets move, and an annual review of the inventory and policy documents. Requirements differ between insurers and policies, so check yours.

Repairs

A restorer's first questions are what the piece is made of and how it was finished. The answer decides which products are safe to use. A maker's record that names the timber, the finish product, the alloy or the glaze saves guesswork and avoids damage from the wrong treatment. A care card kept with the piece carries the same information day to day.

Authentication

Christie's explains that specialists compare style and technique with the maker's known work, look at signatures, consult a catalogue raisonné where one exists, and may use scientific methods such as infrared reflectography, X-rays and tree-ring dating for wood. Each of those works better when there is a record to compare against: photos of the making, the mark as struck, the materials as bought.

When provenance fails: the Knoedler case

The collapse of the Knoedler gallery in New York is a standard example of what missing provenance can hide. The Winterthur Museum's account describes how a Long Island dealer, Glafira Rosales, sold 31 paintings presented as Abstract Expressionist works to Knoedler and another gallery over fourteen years. She said they came from an anonymous collector known only as "Mr. X".

The paintings were made by a painter living in Queens. The lack of a clear ownership history was one of the red flags plaintiffs said should have raised suspicion. The gallery closed in 2011, and Rosales pleaded guilty in 2013 to charges including wire fraud. The gallery's former director has maintained that she acted in good faith on experts' opinions.

The lesson for makers and owners is simple. A record made at the time, by someone who can be identified, is worth more than any story told later.

What auction houses and appraisers ask for

Christie's lists the following as evidence of provenance: receipts and invoices of previous sales; auction catalogues; exhibition catalogues or museum inventory numbers; a catalogue raisonné; archival records or correspondence linking the work to known collections; and certificates of authenticity signed by the artist or an expert. It treats archive photographs and estate inventories as secondary evidence, used alongside those documents.

Bonhams' online valuation form asks sellers for images of the front and back, or top and bottom, of an item, including any signatures and certificates of authenticity. It states that auction estimates based on photographs are preliminary only and may change after inspection and research, and that Bonhams gives no guarantee about an item's origin or provenance.

The Object ID standard is useful for both makers and owners. It was developed from 1993 by the Getty Information Institute with police, customs, museums, the art trade, valuers and insurers, launched in 1997 and is now promoted by ICOM, the International Council of Museums. It lists nine categories of information: type of object, materials and techniques, measurements, inscriptions and markings, distinguishing features, title, subject, date or period, and maker. ICOM's steps also include taking photographs and keeping the documentation in a secure place.

What makers should record

Record each piece against a permanent serial number, at the time you make it. The serial number guide covers numbering and marking.

Record	What to keep	Why it helps later
Identity	Serial number, piece name, completion date, maker and workshop	Links every other document to one object
Materials	Species, alloy and fineness, clay body and glaze, hide and tannage; supplier and batch where known	Repairs, valuation, questions about origin
Marks	Photo of each mark, label or engraving as applied, and where it is	Comparison if the piece is ever questioned
Making	Dated photos at key stages	Shows the piece was made in your workshop
Finish	Product names, coats, dates	The first thing a restorer needs
Dimensions	Measured sizes and weight where relevant	Identification and insurance
Documents	Quote, invoice, certificate, care card	The paper trail a buyer or insurer asks for
Later history	Repairs, refinishes, alterations, with dates	Explains changes a future expert will see

Photos of work in progress do double duty. They keep clients informed during the build and become evidence of making afterwards. Our guide to photographing work in progress for clients covers what to shoot.

Keep personal data out of anything public. A record can say that ownership passed to a new owner in a given year without naming them. Names, addresses and invoices stay in private files.

What owners should keep

• The maker's invoice and any certificate, care card and guarantee.
• Photos of the piece when new, including marks, labels and any engraving, plus a current photo.
• Every later valuation or appraisal, with the date and the valuer's name.
• Receipts and notes for repairs, cleaning or alterations, and who did them.
• Anything that adds to the history: exhibition, publication, letters from the maker.
• If you sell or give the piece away, pass the records on with it and keep copies.

Tell your insurer about valuable new pieces and check what your policy requires.

Keeping records for decades

Paper fades and gets lost. Digital files go unreadable when formats, devices or accounts disappear. Both need a plan.

Choose lasting formats

The Library of Congress publishes a Recommended Formats Statement for the material it collects. For digital photographs, its preferred formats include TIFF, JPEG 2000, PNG and JPEG. For digital text, they include PDF/A and PDF/UA, with ordinary PDF at the highest quality available also listed. It asks that files carry no encryption or digital rights management that controls access. A sensible personal set is JPEG or TIFF for photos and PDF/A for documents.

Keep more than one copy

The Library of Congress's advice on personal digital photographs is practical:

• make at least two copies of the photos you want to keep, and more is better;
• store them in different places, as far apart as practical;
• give files descriptive names and write a short description of how they are organised;
• keep a copy of the inventory with your important papers;
• check at least once a year that you can still open them;
• create new copies on new media every five years or when needed.

The same habits work for invoices, certificates and care cards. One copy at home and one with a relative, a bank or a cloud service you trust is a reasonable start.

Keep paper too

Print the documents that matter most, such as the certificate and the care card, and keep them with the piece or with your household papers. A printed serial number and short web address on the card mean the digital record can still be found if a file is lost.

Sources

• What does provenance mean?, Christie's: definition of provenance, why it matters, gaps raising questions, value, evidence accepted, secondary evidence
• How auction houses authenticate artwork, Christie's: style and technique, signatures, catalogue raisonné, scientific analysis, attributions as expert opinion
• Sell with Bonhams, Bonhams: photos requested, signatures and certificates, preliminary photo-based estimates, no guarantee of provenance
• How to insure valuable jewelry, Chubb: inventory contents, professional appraisal, re-appraisal every few years, annual review
• Object ID, ICOM: history of the standard, nine categories of information, photographs and secure storage
• The Knoedler Gallery case, Winterthur Museum: 31 paintings, "Mr. X", lack of ownership history as a red flag, closure in 2011, 2013 guilty plea, director's position
• Recommended Formats Statement: still image works, Library of Congress: preferred formats for digital photographs
• Recommended Formats Statement: textual works, Library of Congress: PDF/A, PDF/UA and other preferred text formats, no access-controlling encryption
• Personal archiving: digital photographs, Library of Congress: two or more copies in separate places, naming and organising, yearly checks, new media every five years