Monaco

Apr 4, 1881 | Country flag, Merchant flag, State flag, War flag |

Guatemala

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

...

Honduras

Mar 7, 1866 | Country flag, Merchant flag, State ensign, State flag, War flag |

...

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...

Colombia

Nov 26, 1861 | Country flag, State ensign, State flag, War flag |

...

Monaco (Variation)

Jan 1, 1858 | Naval flag, State ensign, State flag, War flag |

...