Old Steine Cannon

During the 1940's, possibly earlier, an old iron cannon was parked on the grass at the north side of the south garden of Old Steine adjacent the crossover from Castle Square to St. James's Street. Probably from the Napoleonic era and designed to fire over a low parapet, it was raised high on an iron carriage with two smallish iron wheels at the front and skids at the rear.

I wonder if it was a relic of the seafront battery and what happened to it? Perhaps it went to the war effort and was melted down for armaments.