You Don’t Have to Be Jewish to Love Levy’s was a famous advertising slogan and campaign used by Levy's Real Jewish Rye bread company in the United States in the 1960s and 1970s. The slogan was meant to convey the idea that Levy's bread was so delicious and high-quality that it could be enjoyed by people of any background or religion.
Cooper Black, designed by Oswald Bruce Cooper, is probably the font used in the poster's advertising slogan. The font is a commercial one and you can view more details about it here.