'Pirro from Ermione' by Mary Fedden – £2000 at Olympia Auctions.

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In her later period she designed programme and book covers for the Glyndebourne Festival and exhibited her work several times at the East Sussex manor house.

Occasionally her views relating to Glyndebourne and its operas appear at auction. One came up at Olympia Auctions (25% buyer’s premium) on May 6. Signed and dated 1995, the 8½ x 5in (22 x 13cm) watercolour depicted the lead character Pirro from Rossini’s Ermione (1819).

The vendor had bought it from an exhibition at the Glyndebourne Opera House in the year it was executed.

In the opera, Pirro (or ‘Pyrrhus’), the son of Achilles, king of Epirus, falls in love with the Trojan prisoner Andromache, widow of Hector, and is eventually killed by a group of angry soldiers.

Estimated at £800-1200, the watercolour took £2000. The sum was in line with the £1800 for another of Fedden’s Glyndebourne scenes – a view of two figures on stage during a production of Verdi’s Simone Boccanegra – sold at Christie’s in March 2004.