Lost 1777 - Privateer, double-ended Mediterranean type (tartane)
The Mark Antonio was a small Spanish privateer of the double-ended Mediterranean type, the kind Bermuda's 1986 stamp calls a tartar (tartane). In the summer of 1777, during the American War of Independence, she was sailing in ballast from St Eustatius, the Dutch island that was then a busy back door for supplies to the American colonies, bound for Cape Henlopen at the mouth of Delaware Bay. On 18 July 1777 she struck Bermuda's reefs and was lost. Robert Marx's Shipwrecks in the Americas gives her master as Captain Jean Bautist Hugonne.
The wreck was found by Teddy Tucker in the early 1960s. Only a few artefacts were recovered, among them musket shot and cannon balls. She was one of the ships shown in Bermuda's 1986 shipwreck stamp series (50 cents).
Reported to lie on a reef in about 20 ft of water, but it is not a buoyed dive site and no published position was found. Little is likely to be visible beyond scattered ballast and concreted ironwork. Ask a local operator, and remember that all remains are protected.