The plaque is mounted on the right post of the park gate below a shield-shaped plaque. 

A bronze, framed, metal plaque with a badge at the center showing the emblem of the "Sons of the American Revolution" (Eagle over Maltese Cross), inscribed in English text. The plaque measures a depth of 30mm, height of 300mm, and a width of 455mm. It is unveiled in 1997.

Source of photo and information: Imperial War Museum War Memorials Register

ON THIS SITE WAS MILL (OLD MILL - MILLBAY) GAOL

WHERE OVER 1500 AMERICAN SAILORS

WERE HELD IN CAPTIVITY DURING THE

WAR FOR AMERICAN INDEPENDENCE 1777-1783

(-badge of the sons of the American revolution-)

THIS PLAQUE PLACED BY THE

NATIONAL SOCIETY OF SONS OF THE AMERICAN REVOLUTION

1997