A bicorne winter campaign hat which belonged to late French Emperor Napoleon Bonaparte is displayed ahead of an auction at Bonhams in Hong Kong, China, September 3, 2021. Picture taken September 3, 2021. REUTERS/Tyrone Siu 

A bicorne winter campaign hat which belonged to late French Emperor Napoleon Bonaparte is displayed ahead of an auction at Bonhams in Hong Kong, China, September 3, 2021. Picture taken September 3, 2021. REUTERS/Tyrone Siu 

A bicorne winter campaign hat which belonged to late French Emperor Napoleon Bonaparte is displayed ahead of an auction at Bonhams in Hong Kong, China, September 3, 2021. Picture taken September 3, 2021. REUTERS/Tyrone Siu 

A bicorne winter campaign hat which belonged to late French Emperor Napoleon Bonaparte is displayed ahead of an auction at Bonhams in Hong Kong, China, September 3, 2021. Picture taken September 3, 2021. REUTERS/Tyrone Siu 

A detail of the bicorne winter campaign hat which belonged to late French Emperor Napoleon Bonaparte is seen ahead of an auction at Bonhams in Hong Kong, China, September 3, 2021. Picture taken September 3, 2021. REUTERS/Tyrone Siu 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS TPX IMAGES OF THE DAY 

French President Emmanuel Macron and his wife Brigitte Macron speak with Jean-Christophe Napoleon Bonaparte and his wife Olympia von und zu Arco-Zinneberg as they leave after a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

Jean-Christophe Napoleon Bonaparte and his wife Olympia von und zu Arco-Zinneberg speak as French President Emmanuel Macron and his wife Brigitte Macron leave after a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of Napoleon's tomb during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS 

Jean-Christophe Napoleon Bonaparte and his wife Olympia von und zu Arco-Zinneberg welcome French President Emmanuel Macron and his wife Brigitte Macron before a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS REFILE - CORRECTING HEADLINE 

Jean-Christophe Napoleon Bonaparte and his wife Olympia von und zu Arco-Zinneberg welcome French President Emmanuel Macron and his wife Brigitte Macron before a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death, at the Hotel des Invalides in Paris, France, May 5, 2021. Christophe Petit Tesson/Pool via REUTERS REFILE - CORRECTING HEADLINE 

French President Emmanuel Macron and Jean-Christophe Napoleon Bonaparte stand in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

Jean-Christophe Napoleon Bonaparte attends a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

Jean-Christophe Napoleon Bonaparte and his wife Olympia von Arco-Zinneberg arrive to attend a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

French President Emmanuel Macron and his wife Brigitte Macron stand in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Cathedral Saint-Louis of the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool 

French President Emmanuel Macron stands in front of the tomb of Napoleon Bonaparte (1769-1821) during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the Cathedral Saint-Louis of the Invalides in Paris, France, May 5, 2021. REUTERS/Sarah Meyssonnier/Pool TPX IMAGES OF THE DAY 

French President Emmanuel Macron walks to the tribune to deliver a speech during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the French Academy in Paris, France, May 5, 2021. Michel Euler/Pool via REUTERS 

French President Emmanuel Macron speaks during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the French Academy in Paris, France, May 5, 2021. Michel Euler/Pool via REUTERS 

Xavier Darcos speaks during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the French Academy in Paris, France, May 5, 2021. Michel Euler/Pool via REUTERS 

French historian Jean Tulard speaks during a ceremony to commemorate the 200th anniversary of Napoleon Bonaparte's death at the French Academy in Paris, France, May 5, 2021. Michel Euler/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte listen to speeches at the Academie Francaise as Macron leads commemorations of the bicentenary of the death of Napoleon Bonaparte, in Paris, France May 5, 2021. Michel Euler/Pool via REUTERS 

French President Emmanuel Macron and his wife Brigitte listen to speeches at the Academie Francaise as Macron leads commemorations of the bicentenary of the death of Napoleon Bonaparte, in Paris, France May 5, 2021. Michel Euler/Pool via REUTERS 

A bronze statue of Napoleon Bonaparte in frock coat by Amedee Charron (19th century) is displayed at Osenat auction house before being put on auction for the bicentenary of Napoleon I's death, in Fontainebleau, near Paris, France, April 30, 2021. Picture taken April 30, 2021. REUTERS/Sarah Meyssonnier 

A marble bust "The First Consul Bonaparte" by Samson Porcelain factory is displayed at Osenat auction house before being put on auction for the bicentenary of Napoleon's death, in Fontainebleau, near Paris, France, April 30, 2021. REUTERS/Sarah Meyssonnier 

A bronze statue of Napoleon Bonaparte in uniform is displayed at Osenat auction house before being put on auction for the bicentenary of Napoleon I's death, in Fontainebleau, near Paris, France, April 30, 2021. REUTERS/Sarah Meyssonnier 

A bronze bust named "The First Consul Bonaparte" according to Louis-Simon Boizot (1743-1809) is displayed at Osenat auction house, before being put on auction for the bicentenary of Napoleon's death, in Fontainebleau, near Paris, France, April 30, 2021. REUTERS/Sarah Meyssonnier 

The street sign "Rue Bonaparte" is seen in the Parisian street which bears the name of Napoleon Bonaparte (1769-1821), in Paris, France, April 28, 2021. REUTERS/Sarah Meyssonnier 

A view shows the tomb of Napoleon Bonaparte (1769-1821) during a visit at the Invalides in Paris, France, April 27, 2021. Picture taken April 27, 2021. REUTERS/Sarah Meyssonnier 

A view shows the tomb of Napoleon Bonaparte (1769-1821) during a visit at the Invalides in Paris, France, April 27, 2021. Picture taken April 27, 2021. REUTERS/Sarah Meyssonnier 

A French Imperial Eagle with the letter N is seen on a reliquary casket of Napoleon Bonaparte, displayed in the Musee de l'Armee (Army Museum) at the Hotel des Invalides in Paris, France, April 27, 2021. Picture taken April 27, 2021. REUTERS/Sarah Meyssonnier 

A death mask of Napoleon Bonaparte, crowned with laurel wreath, is displayed in the Musee de l'Armee (Army Museum) at the Hotel des Invalides in Paris, France, April 27, 2021. Picture taken April 27, 2021. REUTERS/Sarah Meyssonnier 

A view shows the Pont des Arts bridge, a pedestrian bridge newly reconstructed between 1981 and 1984, which was under the reign of Napoleon Bonaparte the first metal bridge over the River Seine in Paris, France, April 20, 2021. Picture taken April 20, 2021. REUTERS/Sarah Meyssonnier 

Jean-Christophe Napoleon Bonaparte poses with his grandmother, Princess Napoleon Alix de Foresta, and his wife Olympia von Arco-Zinneberg as they leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte poses with his grandmother, Princess Napoleon Alix de Foresta, and his wife Olympia von Arco-Zinneberg as they leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Herzog Max in Bayern and his wife Elisabeth in Bayern attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Herzog Max in Bayern and his wife Elisabeth in Bayern attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte poses with his grandmother, Princess Napoleon Alix de Foresta, and his wife Olympia von Arco-Zinneberg as they leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Princess Sarvath El Hassan of Jordan and her son Prince Rashid bin El Hassan of Jordan attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France October 19, 2019. Picture taken October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Carolina Ruiseco attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Princess Napoleon Alix de Foresta attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte kisses Princess Napoleon Alix de Foresta as he leaves the Saint-Louis des Invalides Cathedral after his wedding ceremony to Olympia von Arco-Zinneberg in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg leave the Saint-Louis des Invalides Cathedral after their wedding ceremony in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

General Benoit Puga and his wife Isabelle Puga attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Sabine Getty and Joseph Getty attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

French TV host and President Macron's cultural special adviser Stephane Bern attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Charles de Bourbon des Deux-Siciles, his wife Princess Camilla de Bourbon des Deux-Siciles and their daughters Maria Chiara and Maria Carolina attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Princess Anne de Bourbon Sicile and French lawyer Alexandre Ursulet attend the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

French TV host and President Macron's cultural special adviser Stephane Bern attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Grand Duke Henri of Luxembourg attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier 

Grand Duke Henri of Luxembourg attends the wedding ceremony of Jean-Christophe Napoleon Bonaparte and Olympia von Arco-Zinneberg at the Saint-Louis des Invalides Cathedral in Paris, France, October 19, 2019. REUTERS/Benoit Tessier