Rare Ko-Type Brush Washer, Of rectangular shape with curved sides decorated with raised bosses with a pair tab handles on each ends, and supported on four bracket foot on each corner, covered allover with networks of dense iron-gray crackles joined with fine delicate golden crackles, 6.5 in wide. Provenance: From the estate of Professor E.T. Hall, Portland, Oregon, acquired from Parke Barnet galleries.