A CARVED SOAPSTONE RECTANGULAR SEALOf rectangular cross section, carved to one side with twenty-five characters in regular script, carved to the seal face with two characters, one inzhuwen, readingzhou shan shen ji, and the other inbaiwen, readingliou wang zi yin，the stone of opaque honey colour with characteristic veining.6.6cm (2 5/8in) high, 36.3gProvenance: 壽山石雕篆刻印章印文：「六王子印」、「呪衫身基」邊刻《顏氏家訓》，卷第三，勉學：「禮為教本，敬者身基，瞿然自失，斂容抑志也；顏之推勉學之句也。」