I recently acquired this exquisite silver pounce pot. It bears the Fuller of Sussex family crest and was made by Jonathan Hayne of London in 1833. Pounce, often made from powdered cuttlefish bone, was sprinkled on unsized paper before writing. It is approximately 4.3 cm / 1.7 inches in diameter and 8.5 cm / 3.3 inches tall.
It was very possibly owned by John "Mad Jack" Fuller. It was definitely purchased by a member of his family during his lifetime.