Article 10U.K.
The stipulations of the present treaty with regard to the mutual accord of the treatment of the most favoured nation apply unconditionally to the treatment of commercial travellers and their samples. The Chambers of Commerce, as well as other trade associations and other recognised commercial associations in the contracting States as may be authorised in this behalf shall be mutually accepted as competent authorities for issuing any certificates that may be required for commercial travellers.
Articles imported by commercial travellers as samples shall, in each country, be temporarily admitted free of duty on compliance with the customs regulations and formalities established to assure their re-exportation or the payment of the prescribed customs duties if not re-exported within the period allowed by law. But the foregoing privilege shall not extend to articles which, owing to their quantity or value, cannot be considered as samples, or which, owing to their nature, could not be identified upon re-exportation.
In order to facilitate the clearance of samples of goods brought by commercial travellers of one of the two States into the territories of the other to be used as samples or patterns for the purpose of obtaining orders and not for sale, the marks, stamps, or seals affixed by the Customs authorities of one country to commercial samples at the time of exportation, and the list of such samples drawn up in proper form and certified by the competent authority, such list containing an exact description of the samples, shall form sufficient evidence, so far as the respective customs authorities are concerned, of their nature, and shall entitle them to exemption from all customs examination except in so far as may be necessary to establish that the samples produced are identical with those enumerated in the list. The customs authorities of either country are, however, at liberty to affix a supplementary mark to such samples, should this precaution in particular cases be considered necessary.