Made in the USA Federal Glass, Anchor Hocking, producing white opal milk glass for promotional and souvenir purposes.
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These mugs were part of a wave of nostalgia-driven American tourism during the Bicentennial years and after, when domestic travel was booming and keepsakes like these were seen as charming and patriotic. The phrase “I Left My Heart in San Francisco” was heavily commercialized after Tony Bennett’s 1962 hit and became a catchphrase for the city itself, printed on nearly every type of souvenir imaginable.