This seal is held in a box. Xiao Muzhi seal 孝穆治印, Liu Yazi inscription 柳亞子題, 1983 yu Shanghai Zhushizhai 上海竹石齋 (at Shanghai Bamboo Stone Studio). In November 1983, Joseph Needham was awarded the People’s Republic of China Natural Science First Class award and received this seal in commemoration. See also the medal catalogued as NRI2/8/8/1/12 and the certificate catalogued as NRI2/9/9/1/9.