Quan, Heng, active 14th century, creator Shang bai zhai, ke. 權衡, active 14th century 尚白齋, 刻.
Ming Wanli [i.e. between 1573 and 1620] 明萬曆 [i.e. between 1573 and 1620]
China [China] [China] :
Shen shi Shang bai zhai 沈氏尚白齋,