How to Catalog a Collection: What to Record for Every Piece

Ask most collectors what they own and they can tell you. Ask them to prove it and the room goes quiet. The receipt is in an email somewhere. The certificate came with the box, which was thrown out. The gallery closed. The artist's studio changed hands.

None of that is a disaster while you own the piece. It becomes one the day you try to sell, insure, lend or leave it to someone. Cataloging is the work of making a collection provable, and it is easier than people expect if you do it in the right order.

Start with what exists, not what is missing

The temptation is to begin with the pieces that have no paperwork, because those are the worry. Do the opposite. Record the pieces with complete documentation first. It builds the habit, it gives you a template, and it tells you quickly which gaps actually matter.

What to record for every piece

The basics. Artist or maker, title, date, medium, dimensions. For objects: manufacturer, model, materials. For editions: the edition size and your number. Write it exactly as it appears on the piece or the certificate, not from memory.

Photographs. Front, back, signature, edition number, any labels or stamps, any damage. Take them in daylight against a plain wall. These are the photographs a buyer, an insurer or an auction house will ask for, and they are far easier to take now than in a rush later.

Where it came from. The seller, the date, the price. If you bought from a gallery, the invoice. If from auction, the lot and sale. If from the artist, anything in writing. If it was a gift or inheritance, who from and roughly when. This is the beginning of provenance, and a piece with provenance is worth more than the same piece without it.

The paperwork. Receipt, certificate of authenticity, condition report, correspondence, exhibition history, publication references. Scan everything. Originals go in one folder; scans go with the record.

Condition. A sentence or two in plain words, dated. "Small scuff to lower left of frame, October 2026." You will not remember whether that scuff was there when you bought it.

Value. What you paid, and separately, what it is worth now if you know. Keep both. They diverge, and the gap is the whole point of collecting well.

Where the record lives

A spreadsheet is a fine start and better than nothing. The problem is that spreadsheets do not hold photographs or documents well, and they do not travel with the piece when it changes hands.

I built REGISTR because every client I worked with had the same half-finished spreadsheet. Each piece gets its own record with photographs, documents, provenance and value history in one place, and when a piece is sold or gifted, the record transfers to the new owner with the history intact. Every collection I catalog for a client lives there now, and so does my own.

If this sounds like a lot

It is, the first time. A collection of fifty pieces takes a few days of focused work to catalog properly, less if the paperwork is in order. After that it is ten minutes per new piece, done the day it arrives.

If you would rather not do it yourself, cataloging is one of the services I offer. The first conversation is complimentary.