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Each Contracting State also undertakes to communicate, as soon as they appear, to the "International Office for the publication of Customs Tariffs" at Brussels, which is entrusted by the International Convention of July 5th, 1890, with the translation and publication of such tariffs, ten copies of all Customs tariffs or modifications therein which it may establish.
Article 7.
The Contracting States undertake to take the most appropriate measures by their national legislation and administration both to prevent the arbitrary or unjust application of their laws and regulations with regard to Customs and other similar matters, and to ensure redress by administrative, judicial or arbitral procedure for those who may have been prejudiced by such abuses.
All such measures which are at present in force or which may be taken hereafter shall be published in the manner provided by Articles 4 and 5.
Article 8.
Apart from cases in which their importation may be prohibited, and unless it is indispensable for the solution of the dispute that they should be produced, goods which form the subject of a dispute as to the application of the Customs tariff or as to their origin, place of departure or value, must, at the request of the declarant, be at once placed at his disposal without waiting for the solution of the dispute, subject, however, to any measures that may be necessary for safe- guarding the interests of the State. It is understood that the refund of the amount deposited in respect of duties or the cancellation of the undertaking given by the declarant shall take place immediately upon the solution of the dispute, which must, in any case, be as speedy as possible
Article 9.
In order to indicate the progress which has been made in all matters relating to the simplifica- tion of the Customs and other similar formalities referred to in the preceding Articles, each of the Contracting States shall, within twelve months from the coming into force in its own case of the present Convention, furnish the Secretary-General of the League of Nations with a sum- mary of all the steps which it has taken to effect such simplification.
Similar summaries shall thereafter be furnished every three years and whenever requested by the Council of the League.
Article 10.
Samples and specimens which are liable to import duty, and the importation of which is not prohibited, shall, when imported by manufacturers or traders established in any of the Con- tracting States, either in person or through the agency of commercial travellers, be temporarily admitted free of duty to the territory of each of the Contracting States, subject to the amount of the import duties being deposited or security being given for payment if necessary.
To obtain this privilege, manufacturers or traders and commercial travellers must comply with the relevant laws, regulations and Customs formalities prescribed by the said States; these laws and regulations may require the parties concerned to be provided with an identity card.
For the purpose of the present Article, all objects representative of a specified category of goods shall be considered as samples or specimens, provided, first, that the said articles are such that they can be duly identified on re-exportation, and secondly, that the articles thus imported are not of such quantity or value that, taken as a whole, they no longer constitute samples in the usual sense.
The Customs authorities of any of the Contracting States shall recognise as sufficient for the future identification of the samples or specimens the marks which have been affixed by the Customs authorities of any other Contracting State, provided that the said samples or specimens are accompanied by a descriptive list certified by the Customs authorities of the latter State. Addi- tional marks may, however, be affixed to the samples or specimens by the Customs authorities of the importing country in all cases in which the latter consider this additional guarantee indis- pensable for ensuring the identification of the samples or specimens on re-exportation. Except in the latter case, Customs verification shall be confined to identifying the samples and deciding the total duties and charges to which they may eventually be liable.
The period allowed for re-exportation is fixed at not less than six months, subject to pro- longation by the Customs administration of the importing country. When the period of grace has expired, duty shall be payable on samples which have not been re-exported.