Xingyouheng tang seal mark|The bottle of flattened double-gourd form rising to a straight neck and flat lip, the mid-section of the gourd encircled by a loose ring, the concave base carved with four characters, the greenish stone with russet and brown inclusions, the inscription reading 'Hall of Constancy'. 6cm (2 3/8in) high.|黃玉帶皮葫蘆活環鼻煙壺「行有恆堂」篆書刻款Provenance: a distinguished Asian private collection來源： 顯貴亞洲私人收藏A related 'Kardos Ringed-jade' snuff bottle, circa 1730-1800, is illustrated by H.Moss, V.Graham and K.B.Tsang, A Treasury of Chinese Snuff Bottles, The Mary and George Bloch Collection: Vol.1, Jade, Hong Kong, 1995, pp.182-183, no.73.Another jade 'oil basket' snuff bottle with Xingyouheng tang (The Hall of Constancy) mark, 1750-1854, is illustrated by H.Franz, Chinese Art from the Hedda and Lutz Franc Collection: Jade, Hong Kong, 2010, p.130, no.598.