1939 was the first year for Mercury automobiles. It was a slightly larger, more powerful and fancier Ford car. This image may be part of a larger advertisement — perhaps targeted to fashion week people in New York…or to those impressed by Hollywood glamour based on the movie shooting term “Action!” The car was assembled in several locations including Long Beach, California.
To learn more about the car, see: https://myntransportblog.com/2015/03/28/mercury-automobiles-dearborn-michigan-usa-1938-2011-founded-by-edsel-ford/comment-page-1/ .
To learn more about the Long Beach, California, factory, see: http://fordmotorhistory.com/factories/long_beach/ .