战国(秦)  “思言敬事”(反书)玺

A seal of  "si yan jing shi (think about what to say and perform your duties faithfully)(written in an inverted order)" made (by the Qin Stare) during the Warring States Period.

印面 2.3 × 2.04厘米 

高 1.6厘米  重 30.9克

藏于内蒙古呼和浩特市《杨鲁安藏珍馆》