It is an anonymous work or pseudonymous work and 70 years have passed since the date of its creation
It is another kind of work, and 70 years have passed since the year of death of the author (or last-surviving author)
It is an "expressions of traditional folklore and art" or "political speeches, speeches delivered in the court"
It is one of "official documents, legal acts, treaties and the official translations thereof, state emblems and signs (flags, coats of arms, medals, monetary signs)"
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.