British ambassador to the Kingdom of Naples, antiquarian, archaeologist, and vulcanologist who studied Mount Vesuvius (1731–1803). ALS signed “Wm. Hamilton,” one page, 7 x 4.5, Naples, December 3, 1796. Letter regarding finances. In part: “Please to pay…the sum of Three Hundred Ducats for my private use and place the the same to my account.” In fine condition, with a central vertical fold passing through a single letter of the signature, and a few mild creases. RR Auction COA.