Notwithstanding Article 78, in the case of products which form the subject of postal consignments (including parcels), evidence of originating status within the meaning of this Regulation shall be supplied by form APR, a specimen of which is in Annex18, provided that they consist only of originating products and that the value does not exceed ECU 3 000 per consignment, and on condition that the assistance specified in Article 78 (1) is forthcoming in respect of the said form.