Several typos/misspellings on this Smithsonian page -- including "advertisment" not advertisement in the headline and body.
Hopefully, this is correct: "3-color carbro photograph" ...
The Smithsonian has catalogued the 1934 Dinner at Eight/Coca-Cola advertisement:
Dinner at Eight, Coca Cola advertisment | National Museum of American History (si.edu)
DESCRIPTION
A Nicholas Muray 3-color carbro photograph ca. 1934. Cast of "Dinner at Eight" in a Coca Cola advertisment. The...