A air of 'cong'-shaped vases with 'guan'-style glaze and bagua trigrams in relief

Description:

China, Yongzheng seal marks, 19th cent.
H. 28.4 cm
Heavy porcelain vases with high relief of 'Bagua'trigrams. Underglaze blue six-character seal marks on the base
From an old South German private collection - One vase with old crack at the base, shortly going into the wall