Two Large Early Chinese Earthenware Vessels

possibly Neolithic period, each with black painted geometric decoration, loop handles around midsection, largest 17-3/4 in.; one vessel accompanied by certificate of authenticity, dated January 8, 2001, from Hong Kong Art Craft Merchants Associate Limited, Provenance: Private Collection, Rutherfordton, North Carolina
Condition Report: surface dirt layer, scratches, abrasions, and surface wear consistent with age and use