There is a series of Beijing enamel snuff bottles which can be dated to the last decades of the reign, among which are several of varying shapes decorated with a similar design of pairs of birds, representing marital harmony.
See the exhibition catalogue, Hong Kong Museum of Art, Snuff Bottles of the Ch'ing Dynasty, p. 51, nos. 14 and 15; and for a third, see R. Kleiner, Chinese Snuff Bottles from the Collection of Mary and George Bloch, p. 9, no. 8. A fourth bottle in the Eugene Fuller Memorial Collection, Seattle Art Museum, has a Jiaqing reign mark, which reinforces the dating of the group to the late eighteenth century.