Gorringe's will offer the three-page letter alongside four color images from Diana's West Heath school days, reportedly including a group shot with fellow pupil Tilda Swinton, and a program from a 1997 thanksgiving service. The collection is estimated at roughly $5,400 to $8,000 and is listed for sale on July 7.
Experts describe the archive as a rare, intimate window into Diana before public duty reshaped her life — hopeful, domestic-minded and not yet wholly defined by the monarchy. The items arrive ahead of what would have been the couple's 45th anniversary and recall the early chapter before their separation in 1992 and divorce in 1996; Diana died in 1997.