International art shipping: customs, carnets, and inventory fields shippers actually need

International art shipments fail in predictable ways. The invoice says "mixed media on panel" while the customs form says "painting." Dimensions in centimetres were rounded differently on the carnet and the crate label. A consignor never signed export approval for a work that left the country anyway. None of these are shipping-company mysteries. They are inventory gaps that surface at the border.

Registrars who document the right fields before pickup rarely chase crates by phone for a week. This post lists what shippers, brokers, and insurers ask for, and where those values should live on the object record.

Descriptions that match across documents

Pick one canonical description per work and reuse it on the commercial invoice, customs declaration, condition report, and insurance schedule. "Oil on linen" and "oil painting on canvas" may mean the same thing to curators but not to a customs classifier.

For editioned works, include artist, title, year, medium, dimensions, and edition fraction in every export. Omitting edition position causes valuation disputes when only one copy crosses a border.

Dimensions, weight, and crate assumptions

Store framed and unframed dimensions when both exist. Shippers pack framed; artists quote unframed. A single ambiguous field guarantees a surprise surcharge.

Record estimated weight once packaging is known, or note "TBC pending crate" with a follow-up task dated before ship. Last-minute guesses at the warehouse door are expensive.

Flag oversized or fragile handling early. Not every carrier moves sculptures over a threshold without a specialist leg.

Carnets, temporary export, and return timelines

Fair and exhibition shipments often travel on ATA carnets or temporary export regimes. Track carnet numbers, expiry, and countries listed against the works they cover. When a carnet closes, custody and customs status should update together.

Missed return dates create duty bills and reputational damage with customs authorities. Calendar reminders tied to the shipment record beat sticky notes on the crate.

HS codes, valuations, and consignor authority

Harmonized System codes belong in inventory for works that cross borders repeatedly. Your broker can advise per medium; store the agreed code on the work so every export reuses it.

Insurance and customs values should reflect documented list or agreed fair values, not hopeful guesses. Underdeclaration is not a shipping strategy.

Export from consigned work requires consignor approval on file. Attach the permission to the shipment or link to the consignment agreement so junior staff never release work without authority.

Custody events, not overwritten locations

Each leg of a journey should be a dated custody event: gallery to packer, packer to airport, airport to fair booth, booth to storage. Overwriting "location" with the latest city erases the audit trail insurers expect after damage.

When crates split or partial shipments return, update edition copies individually. Shipping 2/5 without recording which copy moved creates provenance holes.

Handoff to finance and clients

Shipping invoices and duties often allocate to specific works or consignments. Link freight costs to the objects they served so consignor statements and margin analysis stay honest.

Collectors expect tracking and customs clearance updates for door-to-door deliveries. Store carrier references on the shipment note attached to the works in the sale.

Art.industries keeps dimensions, descriptions, custody history, and consignment context on the object graph exports read from. Generate manifests from locked fair checklists, push the same strings to PDF packets, and update locations when crates land. Shipping stops being a parallel project and becomes the downstream consequence of accurate inventory.