In 1929 , Oscar Tucci opened a `` Delmonico 's '' popularly called `` Oscar 's Delmonico 's '' at the old restaurant at 2 South William Street in New York . In 1929 , Oscar Tucci opened a `` Delmonico 's '' popularly called `` Oscar 's Delmonico 's '' at the former Delmonico 's location at 2 South William Street ( sometimes listed as 56 Beaver Street ) in New York .