The reference 'EUR.2' and the serial number of the form should be stated on the customs green label declaration C1 or on the customs declaration C2/CP3, as appropriate.
... for export: ... (b) at the time of their presentation to customs, in the case of consignments sent by letter or parcel post which are liable to export duties, provided they are accompanied by a C1 and/or a C2/CP3 declaration.
