A 77-year-old slice from Queen Elizabeth II and Prince Philip's 9-foot wedding cake was just auctioned off for almost $2,800.

A “very rare” 77-year-old slice of the cake served at Queen Elizabeth II and Prince Philip’s wedding sold for £2,200 ($2,800) ...

Would you eat 40-year-old wedding cake? A wealthy bidder recently bought a slice of Queen Elizabeth and Prince Philip's ...

Getty Images A slice of wedding cake from the nuptials of the future Queen Elizabeth and Prince Philip — a full 77 years ago ...

The fruit cake was found under a bed in a suitcase in the original box, along with a presentation card postmarked April 21 ...

The cake, which no longer looks edible, survived for almost eight decades since the wedding day on Nov. 20, 1947.

A “very rare” 77-year-old slice of the cake served at Queen Elizabeth II and Prince Philip’s wedding sold for £2,200 ($2,800) this week, according to auction house Reeman Dansie.

LONDON — A "very rare" 77-year-old slice of the cake served at Queen Elizabeth II and Prince Philip's wedding sold for $2,800 ...