The well-potted Jian ware bowl glazed in infused black and brown color tone, similar to oil drip patterns, bottom unglazed.|Song Dynasty period.||Height: 2 in (5.1 cm) Diameter: 4 3/4 in (12.1 cm)|宋 建盞|建盞盞口外侈，腹部斜收，小圈足呈玉環狀，留有旋坯紋，修美流暢。胎體厚重堅致，內外壁施釉，碗口釉呈土黃色，口下漸為黑、黃相間，底部淌釉有垂釉痕，內外黑釉面上帶黃色條縷絲紋，類似野兔毛毫，圈足露胎，質地堅實，削足平整，藏界稱之為“兔毫盞”。《茶錄》中提到：“茶色白，宜黑盞，建安所造者紺黑紋如兔毫，其坯微厚，繼之久，熱難冷，最為妥用，出他處者皆不及也。”