The current lot was most likely made as a liner for a jade cong, thus rendering it into a single-stem flower vase.
For a discussion on the possible usage of these cloisonné enamel liners, see The Minor Arts of China IV, Spink & Son Ltd, London, 1989, no. 88, p. 71
For a related example in the National Palace Museum, Taipei, see Emperor Ch'ien-lung's Grand Cultural Enterprise, National Palace Museum, 2002, p. 108, III-1, where the author discusses that such liners were used for cong jade vessels (fig.1). Compare a very similar example sold in these Rooms, 15 May 2007, lot 143.