An ivory seal

Description:

China, Qing Dynasty
H. 4,2 cm, 3,8 x 3,8 cm
Square frustum-shaped, the underside carved with four-character of seal inscript, the upper side engraved: bingxu nian zao (made in the bingxu year [1826 or 1886]).
Old Southern German private collection, acquired before 1990 by repute - The EU trade certificate for the sale of this lot is available - Minor traces of use, few material cracks