Original vintage 1977 glossy 9.5 x 7 silver gelatin photo of Prince Charles watching a polo match with Diana's sister, Lady Sarah Spencer, in July 1977. Reverse bears a Keystone credit stamp and affixed caption. In fine condition, with some creasing to edges. Charles was dating Diana's sister Sarah at the time, which led to the future royal couple's first meeting in November 1977. Their relationship lasted only briefly before dissolving over some of Sarah's comments reported in the gossip columns. Diana and Charles's relationship blossomed in 1980, and they got married in 1981.