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An image taken from the video 'Elizabeth: The Unseen Queen' of 20-year-old Princess Elizabeth on a visit to South Africa in 1947. A new documentary set to be released will reveal unseen footage of Queen Elizabeth II. The BBC has been given broad access to a huge archive of homemade films shot by the Queen, her parents and her husband, the Duke of Edinburgh. The film is being made in conjunction with upcoming celebrations for the Queen's Platinum Jubilee. (The Royal Collection via BBC Studios via AP) Image Credit: AP

Previously-unseen home movies from Queen Elizabeth II’s personal archive — including footage capturing the monarch as a young mother and her beaming at her engagement ring — will be shown in a new documentary, the BBC said Sunday.

The queen granted the broadcaster unprecedented access to hundreds of home movies shot by her, her parents and her late husband Prince Philip, as part of celebrations for her upcoming Platinum Jubilee, honoring her 70 years on the throne.

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Britain's Queen Elizabeth in a file photo Image Credit: Reuters

The videos record the queen’s life from when she was a baby in a pram to her coronation in 1953.

One clip captured the first extended visit of Philip to Balmoral Castle in Scotland in 1946, before his engagement to Elizabeth was made public. The footage depicts a beaming Princess Elizabeth showing off her engagement ring to the camera.

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An image taken from the video 'Elizabeth: The Unseen Queen' of Princess Margaret and Princess Elizabeth with their father King George VI onboard HMS Vanguard in 1947. A new documentary set to be released will reveal unseen footage of Queen Elizabeth II. The BBC has been given broad access to a huge archive of homemade films shot by the Queen, her parents and her husband, the Duke of Edinburgh. The film is being made in conjunction with upcoming celebrations for the Queen's Platinum Jubilee. (The Royal Collection via BBC Studios via AP) Image Credit: AP

Philip and Elizabeth wed in November 1947 and were married for 73 years, until Philip’s death last April just a few months before his 100th birthday.

Simon Young, the BBC’s commissioning editor for history, said the broadcaster was honored to have access to the queen’s personal film collection.

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An image taken from the video 'Elizabeth: The Unseen Queen' of then Princess Elizabeth showing off her new engagement ring soon after Prince Philip's marriage proposal at Balmoral in 1946. A new documentary set to be released will reveal unseen footage of Queen Elizabeth II. The BBC has been given broad access to a huge archive of homemade films shot by the Queen, her parents and her husband, the Duke of Edinburgh. The film is being made in conjunction with upcoming celebrations for the Queen's Platinum Jubilee. (The Royal Collection via BBC Studios via AP) Image Credit: AP

“This documentary is an extraordinary glimpse into a deeply personal side of the royal family that is rarely seen, and it’s wonderful to be able to share it with the nation as we mark her Platinum Jubilee,” he said.

‘Elizabeth: The Unseen Queen’ will air in the UK on May 29, ahead of a week of national celebrations to mark the queen’s 70 years on the throne.