Tibet

Jan 1, 1912 | Unofficial flag |

Portugal (Naval Jack)

Jun 30, 1911 | Naval flag |

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Portugal (National colours)

Jun 30, 1911 | War flag |

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Portugal

Jun 30, 1911 | Country flag, Merchant flag, Naval flag, State ensign, State flag |

Philippines

Jun 12, 1898 | Country flag, Merchant flag, Naval flag, Special, State ensign, State flag, War flag |

  Only flag in the world which may be hoisted upside down if the country is in a state of...