This is a rectangular Shoushan stone seal featuring an openwork ancient motif on top with simple, elegant carving. The side bears the inscription: "August of the Guisi Year, carved by Zhang Zi." The face displays classic red-character seal script with strong, well-structured lines. The stone has a warm, lustrous texture and natural patina, making it a refined collection piece that combines aesthetic appreciation with practical use for scholars.

Rectangular seal carved from Shoushan stone, featuring an openwork knob with archaic patterns in a refined and elegant style. An inscription on the side reads: "Carved by Zhang Zi in the eighth month of Guisi year." The seal face displays classic red script carving with strong, precise lines. The stone exhibits a subtle texture and natural aged patina. A valued literati seal combining ornamental beauty and practical use.