端砚 A Duan Inkstone / 吳昌硕铭丁二仲刻端砚, 文房用品, 砚台, 端砚 / 作者： 宝静斋 清，吴昌硕铭，丁二仲刻，端砚。 Qing dynasty, inscribed by Wu Changshuo, carved by Ding Erzhong, a ‘Duan’ inkstone.
