Rectangular form, enameled in deep blue with gold flakes to imitate lapis lazuli, the cover set centrally with a painted oval panel of a floral still life, white guilloché border. The inside of the cover and body struck with interlaced L for Clavel, maison commune mark, and maker's mark, the rim struck with two eagle heads for guarantee, 1837-1847, also stamped with the number 17 on the rim near hinge.