Auction house specialist: what they do, and what they check on a work by a living artist
An auction house specialist is the in-house expert who reviews a submitted work, researches and authenticates it, sets an estimate and writes it up for the catalogue. On a living artist's painting the checks are the same as on any object: artist, date, medium, dimensions, provenance, condition, and photographs of the front, back and signature.
What an auction house specialist does day to day
Fire of Devotion (Heart of Chaos, 2026) is acrylic on canvas, 100 × 150 cm, a vertical field of saturated red and pink crossed by white streaks that descend diagonally. A specialist handed a painting like it would begin with questions that apply to any object, and the houses publish part of the answer.
Sotheby's describes the sequence in its seller guide. A specialist in the relevant category reviews the submission, which includes images and details such as history, paperwork and origin. The specialist then gives an estimate, described as a price range the object is likely to achieve, based on comparable sales, current demand and the object's particular qualities. Before the object reaches the salesroom, the guide says, trusted specialists research and authenticate it, establishing what it is and where it came from. They also photograph it and write it up for the catalogue and website, then market it ahead of the sale. If the seller decides to proceed, the guide says a consignment agreement setting out the terms of sale is signed; the help page adds that a specialist contacts the seller to sign it.
A job posting shows the same duties from the employer's side. Phillips advertised a Specialist, Jewellery role in Geneva (posted 7 July 2026). That is a jewellery department, not paintings, but the listed duties are not specific to jewellery: sourcing property for auctions and private sales, preparing valuations and consignment proposals, producing catalogue content, building relationships with collectors, dealers, family offices and institutions, and representing the house at previews, fairs and exhibitions.
What a specialist checks on a work by a living artist
Sotheby's help page lists what its specialists consider: the artist or maker, provenance, date, materials, dimensions, rarity, subject matter or type, and condition. They also look at comparable sales and the past performance of works by the same and similar artists. The help page adds that a non-binding estimate is sent when the item is suited for sale in the current market.
The intake forms of two other houses show what is asked of the person submitting. Christie's, on its Chinese-language estimate page, asks for clear colour photographs of the front, the back and the signature or maker's mark, a description with medium and dimensions, the item's history and how it was acquired, and purchase records; authentication or appraisal documents are welcome but optional. Phillips allows up to six images, including front, back and artist signatures or marks, and asks for medium, artist, title, execution date, dimensions and location, with provenance, literature and price history as optional details.
Read together, the list is short and concrete: signature, back of the canvas, medium, dimensions, year, how it was acquired, purchase record, condition. For a recent painting by a living artist the history is brief, so most of the file is the first sale and the artist's own documentation. That last sentence is a practical reading, not a line from these pages. The photograph below shows the signature on Fire of Devotion, near the lower edge, over the canvas weave.
Specialist, valuation and condition report: what each one is
The words are often run together, and Sotheby's glossary keeps them apart. An estimate is a low and high figure representing the opinion of its experts about what a work may sell for at auction. A valuation is described there as a detailed description and current value of property prepared by Sotheby's staff; it differs from an auction estimate and is used for purposes such as insurance and estate planning. A condition report is a written description of the condition of a work, prepared by Sotheby's specialists before an auction.
The pages read do not define the word appraiser, so this page does not draw a line between specialist and appraiser beyond those three outputs. For the document itself, see what a condition report is and why buyers ask for one; for the sale process as a whole, how art auctions work; and for how a new name reaches a sale at all, emerging artists at auction.
The record behind a recent painting: one studio as an example
This page does not suggest that any work by Perfeito Studio has been or will be offered at auction, and the studio does not set or quote secondary-market values. It uses the studio only to show what a documented recent work looks like when set against the list above.
Fire of Devotion is catalogued as Heart of Chaos, 2026, acrylic on canvas, 100 × 150 cm (39.4 × 59.1 in), Archive ID AP-HOC-2026-003, BRL 5,700. Vibrant Awakening is Luminous Rebirth, 2025, acrylic on canvas, 100 × 150 cm (39 × 59 in), Archive ID AP-LMR-2025-003, BRL 5,900. Each is signed, catalogued under its Archive ID and photographed in detail before it leaves the studio, and its work page carries provenance and condition lines, with detailed condition images on request. The Certificate of Authenticity lists the title, series, year, medium and materials, dimensions, a studio image of the work, the Archive ID, the artist's signature and date, the studio's identification, care guidance and a QR code linking to the work's official page. In terms of the lists above: title, year, medium and dimensions are on the certificate; the signature is on the canvas and on the certificate; the invoice or receipt is the purchase record.
What the studio does not have is an auction history, so there are no earlier results to compare. A specialist would then rely on similar artists, which Sotheby's lists among its factors. See what an Archive ID is.
For those acquiring: scale, light, documents and shipping
Scale. At 100 × 150 cm (39.4 × 59.1 in), Fire of Devotion is a vertical work. In the visualisation above it hangs on a white wall with a long wooden bench beneath it. Vibrant Awakening has the same dimensions, with red, blue, green and yellow passages built in translucent layers. The studio holds no weight or fixing information for the works, so ask the studio for the details of a specific work.
Light. The visualisation uses recessed ceiling lights on a white wall. It is an illustration, not a lighting specification.
Documents. Every acquisition is direct from the artist and includes the original, unique painting; a signed Certificate of Authenticity with the full technical record and Archive ID; a fiscal invoice or official receipt; an Artwork Acquisition Agreement covering transfer of ownership, copyright and image use; an artist dossier; conservation and care guidance; and professional packaging. The certificate's QR code links to the work's official page.
Shipping. The studio ships within Brazil and internationally. Freight is quoted per destination and paid by the buyer, as are any import duties or taxes at the destination; transit insurance is available. See shipping. Prices are in Brazilian real; for buyers outside Brazil, payment is by international bank transfer in USD.
From the studio
From the studio: a painting that can be checked
Alyne Perfeito is an emerging Brazilian visual artist and trained architect based in Brasília. Her first documented body of work was painted in 2025 and 2026 and is organised in six series that run at the same time. Fire of Devotion belongs to Heart of Chaos; its catalogue text sets a sustained, steady-state red against sudden white streaks, in contrast with the black voids that other works in the series use to stage ignition.
In the signature detail the canvas weave is visible through the paint, and in the surface detail a thin pale line crosses a dark mark and a ragged pale stroke. These are the kind of close photographs a specialist reviews, and every painting is photographed this way before it leaves the studio. That record, more than any adjective, is what can be checked against the painting.
Frequently asked
What does an auction house specialist do day to day?
Per Sotheby's seller guide, a specialist in the relevant category reviews the submission, gives an estimate based on comparable sales, current demand and the object's particular qualities, researches and authenticates the object, photographs it and writes it up for the catalogue and website, and markets it before the sale. A Phillips job posting adds valuations, consignment proposals, relationships with collectors and dealers, and attendance at previews and fairs.
How does a specialist assess authenticity and condition?
Sotheby's seller guide says specialists research and authenticate an object and establish what it is and where it came from, and its help page lists provenance, materials, dimensions and condition among the factors specialists weigh. The pages read do not describe the methods used. A condition report is, in Sotheby's glossary, a written description of a work's condition prepared by its specialists before an auction.
Why does a signature and an archive number matter to a specialist?
Christie's and Phillips both ask the person submitting a work for photographs that include the signature or maker's mark, and Sotheby's lists the artist or maker and provenance among its factors. An archive number is not named on those pages. It is an identifier that ties the signed painting to the record that describes it, and the studio's certificate carries it.
What is a condition report and who writes it?
At Sotheby's, it is a written description of the condition of a work, prepared by its specialists before an auction. The studio publishes a condition line on each work page and provides detailed condition images on request.
How is a specialist different from an appraiser?
The pages read do not define an appraiser. What Sotheby's glossary separates is the output: an auction estimate is a low and high figure for a sale, a valuation is a detailed description and current value prepared by staff and used for purposes such as insurance and estate planning, and a condition report describes physical state. Which of these is needed depends on the purpose.
Ask the studio for a work's record
Dimensions, Archive ID, detail photographs and a shipping quote for your destination, directly from the artist.
Sources
- Sotheby's — 2026-10-30
- Sotheby's Help Center — 2026-10-30
- Sotheby's — 2026-10-30
- Phillips — 2026-10-30
- Phillips — 2026-10-30
- Christie's (christies.com.cn) — 2026-10-30
- Perfeito Studio — 2026-10-30
- Perfeito Studio — 2026-10-30
- Perfeito Studio — 2026-10-30
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