triptyque

triptych; A three-part customs document allowing for the temporary importation of a motor vehicle into a foreign country without the need to pay customs duties.; The set of three fundamental and mandatory elements (tariff classification, origin, and customs value) that serve as the legal basis for classifying, valuing, and declaring any imported or exported goods.

Learned borrowing from Ancient Greek τρίπτυχος (tríptukhos).