A group of six seals

Chinese Works of Art
A group of six seals
The first two with uncarved seal faces and mythical beast finials atop rectangular plinths, one of dark cherry color, one of milky gray hue; the third of similar shape carved from dark purple stone and incised to the seal face to read zixian lou yin; the fourth of creamy yellow color surmounted by a mythical beast final, the seal face incised to read [ren] dan ru ju; the fifth of mottled brown and cream colors surmounted by a water buffalo and two calves, the seal face reading Beishou Huang Yin, the side bearing the incised date and signature bingwu xia [Mei]shi ke [likely equivalent to 1966]; the sixth of yellowish color, surmounted by a seated mythical beast, the seal face incised ju [?] qianfeng.
3 3/4in (9.5cm) height of fifth and tallest (6).