A photograph of a young Lady Diana Spencer is due to be auctioned in the US.
The picture shows Lady Spencer in 1979 or 1980, before she became engaged to Prince Charles and long before she was Princess Diana.
It is believed the picture of the future royal lounging on a skiing holiday was originally sold to the Daily Mail when she did become engaged but the picture was then crossed out and the words: "NOT TO BE PUBLISHED" scrawled across it.
While the subject of the picture has been identified as Lady Spencer the identity of the man resting his book on her shoulder is not currently known.
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