Two Overlay Glass Snuff Bottles Qing Dynasty, 18th / 19th Century

comprising a blue overlay glass bottle carved with birds, a butterfly and a prunus; and a green overlay glass bottle carved with orchids, inscribed with four archaic characters wangzhe zhixiang ('Fragrance fit for a king'), the reverse carved with two bamboo plants by a white rock, with a spider suspending from a line of silk, inscribed with an indistinct two-character seal mark