Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
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Sales calendar

Public sales, declared private sales and art fairs: an information calendar fed by approved auction houses.

Updated : October 28, 2026· 3 min read

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An information calendar

Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)
Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)

The sales calendar brings together public sales, declared private sales and art fairs announced by approved auction houses. It helps professionals, collectors and authorities anticipate market activity.

OIMAP organises no sale and receives no commission: the calendar is an information service. Each entry refers to the auction house or organiser, who alone is responsible for the sale.

This section presents the public sales, the private sales and the fairs.

  • Sales
  • Calendar
  • Market

The sales calendar in figures

1,200Sales recorded per year (indicative)
340Approved auction houses (indicative)
45Fairs per year (indicative)
48 hTime limit for publishing a declaration (indicative)

Source: Events and Communications Directorate.

Three pages

Breakdown

Public sales62%
Declared private sales18%
Fairs20%

Breakdown of calendar entries (indicative).

Sugar Bowl, Louis Rorimer (c. 1910)
Sugar Bowl, Louis Rorimer (c. 1910)
Bidri Hookah Bowl with Roses (c. 1650s)
Bidri Hookah Bowl with Roses (c. 1650s)
Beaker (c. late 600s–early 700s)
Beaker (c. late 600s–early 700s)

What the calendar is for

The calendar makes it possible to know major sales in advance, plan travel and follow activity by region. Authorities use it to spot sales of objects flagged in BIOP alerts.

It contributes to market transparency, one of the Organisation's objectives, without ever replacing the information provided by the auction houses.

How it is fed

Approved auction houses declare their sales via the Desk, at least thirty days before the scheduled date. The declaration specifies the place, the date, the category of objects and the catalogue where there is one.

Fair organisers declare their annual calendar. The information is verified, then published within 48 hours on an indicative basis.

Information, not a guarantee

Listing in the calendar is not a certification: it attests neither to the authenticity of the objects nor to the quality of the sale. Buyers are still encouraged to ask for provenance documents and to consult the BIOP registry.

Approved auction houses have, however, signed up to a due diligence commitment, compliance with which is monitored.

Searching for a sale

The calendar can be browsed by date, by region, by category — painting, contemporary art, tribal art, furniture — and by type of sale. An email subscription makes it possible to receive new entries for a segment.

A map view and an export in iCal format make it easy to add entries to a personal calendar.

Three types of entries

Three categories
TypeSourcePublication
Public saleApproved auction houseAt least 30 days before
Private saleConfidential declarationAfter the sale, in aggregate form
FairOrganiserAnnual calendar

Milestones

  1. First calendar

    Public sales.

  2. Fairs

    Addition.

  3. Private sales

    Aggregated declarations.

  4. iCal export

    Personal calendar.

Carnet (1863–1865)
Carnet (1863–1865)
Scenes of Daily Life, Roads and Paths: Road to Market (Scènes de la vie quotidienne, Routes et Chemins: Route du Marché), Carle Vernet (1819)
Scenes of Daily Life, Roads and Paths: Road to Market (Scènes de la vie quotidienne, Routes et Chemins: Route du Marché), Carle Vernet (1819)
Lace Towel End (c. 1700s–1800s)
Lace Towel End (c. 1700s–1800s)

No sales by OIMAP

Public or private sale

The Four Markets:  The Fruit Market, Richard Earlom (1775)

Public

Open auctions
  • Public results
  • Catalogue available
  • Calendar announced

For transparency.

The Triumph of Mordecai, Lucas van Leyden (1515)

Private

Private treaty
  • Discretion
  • Aggregated declaration
  • No auctions

For confidentiality.

Following a sale

  1. Search

    By date or region.

  2. Browse

    The record.

  3. Check

    Provenance and BIOP.

  4. Register

    At the auction house.

  5. Find out

    About the conditions.

Good buyer habits

A collector

The Market Place, Wells, Muirhead Bone (1891–1953)
« The calendar lets me plan my travel three months ahead. I always check the BIOP verifications before bidding. »
Édouard Lemaire, collector

Sales vocabulary

Approved auction house
Auction house recognised by OIMAP.
Private sale
Private treaty sale.
Fair
Commercial art show.
iCal
Calendar format.

Alerts and vigilance

When an object reported as stolen appears in a catalogue, the auction house is contacted and the sale of the object is suspended. The calendar indicates the suspension without giving third parties the reason.

Anyone who notices an anomaly may report it to the address of the Events Directorate.

Frequently asked questions

Does OIMAP sell works?

No.

Is a listed sale guaranteed?

No, it is information.

How do I declare a sale?

Via the Desk, 30 days before.

Where can I see public sales?

Useful documents

Contacts

Architectural Conference (c. 1622)
Architectural Conference (c. 1622)
Events and Communications DirectorateParis — Headquarters+33 1 00 00 07 00evenements@oimap.exampleMonday to Friday, 9:00 a.m. – 5:00 p.m.

View public sales

Saint Jerome and the Lion (From the former Church of St. Peter in Erfurt), Tilman Riemenschneider (c. 1495)

Calendar of auctions.

Public sales
Image credits (23)
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