Article 22

The Commission shall, within two years of the entry into force of this Treaty,  determine the extent to which the customs duties of a fiscal nature referred to in  Article 17( 2 ) shall be taken into account in calculating the arithmetical average  provided for in Article 19( 1 ). The Commission shall take account of any protective character which such duties may have.

Within six months of such determination, any Member State may request that the  procedure provided for in Article 20 should be applied to the product in question,  but in this event the percentage limit provided in that Article shall not be applicable  to that State.

Article 23

1. For the purpose of the progressive introduction of the Common Customs Tariff,  Member States shall amend their tariffs applicable to third countries as follows:

a. in the case of tariff headings on which the duties applied in practice on 1 January 1957 do not differ by more than 15% in either direction from the duties  in the Common Customs Tariff, the latter duties shall be applied at the end of  the fourth year after the entry into force of this Treaty;

b. in any other case, each Member State shall, as from the same date, apply a duty  reducing by 30% the difference between the duty applied in practice on 1  January 1957 and the duty in the Common Customs Tariff;
c. at the end of the second stage this difference shall again be reduced by 30%;
d. in the case of tariff headings for which the duties in the Common Customs Tariff  are not yet available at the end of the first stage, each Member State shall,  within six months of the Council's action in accordance with Article 20, apply  such duties as would result from application of the rules contained in this  paragraph.

2. Where a Member State has been granted an authorization under Article 17( 4 ), it  need not, for as long as that authorization remains valid, apply the preceding  provisions to the tariff headings to which the authorization applies. When such  authorization expires, the Member State concerned shall apply such duty as would  have resulted from application of the rules contained in paragraph 1.

3. The Common Customs Tariff shall be applied in its entirety by the end of the  transitional period at the latest.

Article 24

Member States shall remain free to change their duties more rapidly than is provided  for in Article 23 in order to bring them into line with the Common Customs Tariff

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