For a blue overlay bottle of less elongated shape see Sotheby's, Fine and Important Chinese Snuff Bottles from the Collection of Bob C. Stevens, Part I, Honolulu, November 7, 1981, lot 12

For a discussion of the dragon in Chinese snuff bottles see Hugh Moss, Victor Graham, Ka Bo Tsang, The Art of the Chinese Snuff Bottle, The J & J Collection, pp. 599-601