The Nara Municipal Buried Cultural Properties Research Center, which excavates and researches kofun, and the Nara prefectural Archaeological Institute of Kashihara, which assists in the excavation, announced the discoveries on Jan. 25. He added: "We understand that the public will want to show their respects to Her Majesty and we would urge them to do so safely."

Hundreds of thousands of mourners are expected to line the route of the silent procession, similar to the state funeral of her father, King George VI, in 1952. After the funeral she will travel to Windsor Castle, where she will be laid to rest in St George’s Chapel alongside Prince Philip. The route the coffin will take The patterns are identical to the patterns inscribed on a type of ancient mirror called “Daryukyo.” Daryukyo is a type of mirror that was made in the Japanese archipelago in the Kofun Period. On Wednesday at 2.22pm, adorned with the Imperial State Crown, the coffin will be taken in procession on a Gun Carriage of the King’s Troop Royal Horse Artillery to the Palace of Westminster, where she will lie in state in Westminster Hall for four days.

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The unusually shaped mirror and sword of more than 2 meters were discovered at the Tomiomaruyama kofun, Japan’s largest round kofun, which was created in the second half of the fourth century.

Camilla, now Queen Consort, and the Countess of Wessex will follow by car and also attend the service in St Giles'. They believe that no robber had opened the wooden coffin to pilfer its contents as it was found in good condition. It will then travel in a procession to St Giles' Cathedral, Edinburgh, along the Royal Mile with the King and the late Queen's other children the Princess Royal, the Duke of York and the Earl of Wessex following behind on foot, along with Anne's husband Admiral Sir Tim Laurence.During the current fiscal year, experts excavated a part of the kofun called "tsukuridashi," which is a projected part in the middle portion of the burial mound, and found a burial facility housing a 5-meter-long wooden coffin.