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Queen Sofia Of Spain & Prince Henrik Of Denmark Attends A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by Julian Parker/UK Press via Getty Images)

Queen Sofia Of Spain & Prince Henrik Of Denmark Attends A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by Julian Parker/UK Press via Getty Images)

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Crown Prince Willem-Alexander & Crown Princess Maxima Of Holland Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

Crown Prince Willem-Alexander & Crown Princess Maxima Of Holland Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

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King Carl Gustaf & Queen Silvia Of Sweden Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

King Carl Gustaf & Queen Silvia Of Sweden Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

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Emperor Akihito & Empress Michiko Of Japan Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

Emperor Akihito & Empress Michiko Of Japan Attend A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

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Grand Duke Henri Of Luxembourg Attends A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)

Grand Duke Henri Of Luxembourg Attends A Banquet For Foreign Monarchs & Royal Guests At The Chakri Maha Prasat Throne Hall, Hosted By Thai King Bhumibol Adulyadej, During The Celebrations To Mark The 60Th Anniversary Of His Accession To The Throne. . (Photo by POOL - Julian Parker/UK Press via Getty Images)