Ceramic plaque in form of a leaf. Front surface is carved rough. Border is smooth with red pigment. It has been theorized that these objects were used to grate Yucca tubular, but this function is doubtful as insignificant wear on these objects has been observed. Our hypothesis is that these instruments were used for ritual purposes.  Intact. Measures 9.5"/23.5 cm. Esmeraldas region, Ecuador/Colombia. Ca 500 B.C. - 500 A.D. Published in Prima Dell America 4000 Anni Di Arte Precolombiana a Cura Di Giuliana Zanetti, p. 253. Custom made display and book will accompany this piece.