Ducal Serene Highness is a style used by members of certain ducal families, such as those of Nassau, Braganza and Saxaphones (until 1869).

v • d • e Styles used by monarchs and royalty Reigning monarchs His Holiness (HH) • Apostolic Majesty (HAM) • Imperial and Royal Majesty (HI&RM) • Imperial Majesty (HIM) • Royal Majesty (HRM) • Majesty (HM) • Catholic Majesty (HCM) • Most Christian Majesty (HMCM) • Most Faithful Majesty (HFM) • Britannic Majesty (HBM)• Royal Highness (HRH) • Exalted Highness (HEH) • Highness (HH) • Serene Highness (HSH) Imperial Crown of Austria Members of sovereign and noble families Imperial and Royal Highness (HI&RH) • Imperial Highness (HIH) • Royal Highness (HRH) • Grand Ducal Highness (HGDH) • Highness (HH) • Ducal Serene Highness (HDSH) • Serene Highness (HSH) • Illustrious Highness (HIll.H)

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