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

Customs guide

Customs codes, identification sheets and training: everything customs officers need to spot cultural property at the border.

Updated : October 28, 2026· 3 min read

Pages in this section

A tool for front-line officers

Seal Color Box (1662–1722)
Seal Color Box (1662–1722)

The customs officer sees thousands of consignments pass each day. Among them, a few illicit cultural objects hide behind ordinary descriptions. OIMAP's customs guide, produced with the WCO, gives them the benchmarks to recognise them.

It has three parts: the customs codes that make it possible to classify cultural property, the identification sheets that help to recognise it, and the training that teaches how to check it.

It is updated every year and available in three languages, in paper and digital versions.

  • Customs
  • Guide
  • Borders

Customs guide in figures

142Identification sheets
9Categories of property
8,940Officers trained
41Participating States

Source: OIMAP Heritage Protection Department.

Breakdown

Customs codes24%
Identification sheets44%
Training32%

Content of the guide.

Why a dedicated guide

General customs codes do not always distinguish cultural property from a decorative object. An ancient statue may be declared as "garden decoration", a manuscript as "printed paper", an old ceramic as "tableware". The guide helps to decode these misleading descriptions.

It also provides benchmarks on prices, expected documents, high-risk countries and transit routes. This information feeds the risk analysis that officers apply to each consignment.

Whitby Harbor, Frank Meadow Sutcliffe (c. 1885)
Whitby Harbor, Frank Meadow Sutcliffe (c. 1885)
Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s)
Dune Scene with Peasant Figures, Willem van de Velde (mid-1650s)
Ships near the Trieux River, Paul Signac (1925)
Ships near the Trieux River, Paul Signac (1925)

A guide tested in the field

The sheets were drafted with curators, experts and customs officers, and tested in exercises at six airports and three ports. Their format, a double-sided page with photographs, was chosen for ease of use. Officers' feedback led to several revisions.

A mobile application makes it possible to consult the sheets offline, to compare a photograph with the examples and to contact the emergency line in one gesture. It is reserved for authorised officers.

Continuous development

Each edition adds sheets for new types of property and updates the codes, prices and indicators. States may propose additions, notably for property typical of their heritage. In 2024, twenty-four sheets were created or revised.

Customs also contribute to improving the guide by passing on their seizures and observations. This feedback feeds training and alerts.

Support for administrations

OIMAP helps administrations to build the guide into their procedures: adapting the sheets to the national context, training referents, installing the application, putting them in touch with BIOP unit analysts.

A network of customs referents from forty-one States meets each year. It exchanges cases, shares tools and proposes developments to the guide. Its recommendations feed the WCO's work.

Content of the guide

Three parts
PartContentUse
Customs codesUseful Harmonised System codesClassify, spot
Identification sheets142 illustrated sheetsRecognise property
TrainingFour levelsLearn the actions

Landmarks

  1. First guide

    OIMAP – WCO agreement.

  2. 142 sheets

    Complete series.

  3. Application

    Mobile version.

  4. Update

    24 sheets revised.

An ordinary description can hide a treasure

Plaque (1500s–1600s)
Plaque (1500s–1600s)
Boating in Moonlight (1600s)
Boating in Moonlight (1600s)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)
Nuova pianta di Roma data in luce da Giambattista Nolli l’anno MDCCXLVII, known as La Pianta Grande di Roma, Giovanni Battista Nolli (1748)

Paper guide or application

Sailing Vessels: Armed Four-Master Putting Out to Sea, Pieter Bruegel (1561–65)

Paper

Printed sheets
  • No connection needed
  • Robust
  • Annual update

For isolated posts.

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

Application

Mobile version
  • Image search
  • Continuous updates
  • Requires a device

For equipped officers.

Using the guide

  1. Spot

    Detect the suspect consignment.

  2. Identify

    Consult the sheet.

  3. Check

    Query the BIOP.

  4. Decide

    Hold or release.

  5. Report back

    Inform the unit.

Customs officer's reflexes

A head of post

Sketchbook, The Dells, N° 127, page 090 & 91: Harbor with a Road, Maurice Prendergast (c. 1919–1921)
« We put the guide in every office. It has changed the way the teams look at goods. »
Chief Mamadou Keita, head of a border post

Vocabulary of customs

Harmonised System
International customs nomenclature.
Risk analysis
Selection of consignments to check.
Border post
Controlled crossing point.
Manifest
List of the goods in a shipment.

Frequently asked questions

Is the guide free?

Yes for the administrations of Member States.

Does it exist in several languages?

Three.

Who writes the sheets?

Experts and customs officers.

How do I get it?

Through the State's customs correspondent.

Useful documents

Contacts

Roman Ruins, Villa Pamfili, Hubert Robert (1774)
Roman Ruins, Villa Pamfili, Hubert Robert (1774)
Heritage Protection DepartmentParis — Headquarters+33 1 00 00 03 00protection@oimap.exampleMonday to Friday, 9 am – 5 pm

See the customs codes

Seven Jeweled Mountain (late 1800s)

Classifying cultural property.

Customs codes
Image credits (19)
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