LONDON (AP) – A British woman says she’s shocked that a dusty dish on her shelf has been identified as a very valuable 260-year-old antique made for the King of Prussia.

Wendy Jones said Tuesday she was unaware for years that the 22-inch (55-centimeter) meat dish – which once even clattered to the floor – was a rare collectable from a 100-piece dinner service.

Jones took the plate to a taping of BBC television’s Antiques Roadshow, even though she originally hoped experts would value her collection of books.

Experts instead examined the plate and confirmed it was part of a set presented to Frederick the Great of Prussia in 1750 by the Prussian East India Company.

Jones was told the dish, a family heirloom from Germany, is worth about 100,000 pounds ($160,000).

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