Four Titanic Memorials postcards — three from NYC, one from Belfast: color postcard featuring the Titanic Memorial Tower atop the Seamen’s Institute Building, 25 South St., NYC; a sepia close-up of the Titanic Memorial Tower from the roof of the Seamen’s Institute Building; a Titanic tablet/cornerstone on the Seamen’s Institute Building, circa 1923; and a real photo of the Titanic Memorial in Belfast, Ireland. RRAuction COA.