++++ Common Customs Tariff - Customs value - Amounts paid to the seller for certificates of authenticity required for the purposes of the tariff quota opened by Regulation No 217/81 - Inclusion - Classification as taxes paid in the Community by reason of the importation - Not permissible ( Council Regulations Nos 1224/80, Art . 3(1 ), ( 3 ) and ( 4 ) and No 217/81 )