Anyone read the Hornblower short story "Hornblower's Temptation" where Hornblower is junior lieutenant in the ship of the line, HMS Renown under Captain Sawyer. The ship has just captured a French vessel; one of the prisoners is recognised as Irish revolutionary Barry McCool. Hornblower is given the distasteful task of arranging McCool's execution for desertion from the Royal Navy by Admiral William Cornwallis. In exchange for a promise by McCool to make no attempt to incite mutiny by a final speech, Hornblower agrees to send McCool's only possession, a carved sea chest, to his widow, along with a covering letter. He is prevented from doing so when Renown has to hastily put to sea. While at sea, Hornblower discerns a hidden message in McCool's letter, which allows him to discover a secret compartment in the chest, stuffed with currency notes and secret correspondence to other Irish rebels. Does anyone know of a Company who are able to make such an ingenius thing as a Sea Chest or some kind of similar box with hidden compartments using some kind of catch mechanism as described in the book?