El Salvador

May 17, 1912 | Naval flag, Special, State flag, War flag |

Flag with the weirdest proportions....

Bolivia (State flag)

Jul 14, 1888 | State flag |

...

Guatemala

Aug 17, 1871 | Naval flag, State ensign, State flag, War flag |

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San Marino

Apr 6, 1862 | Country flag, Special, State flag, War flag |

Flag of the oldest surviving sovereign state in the world founded on 3 September...

Peru (State flag)

Feb 25, 1825 | Naval flag, State ensign, State flag |

...