She points to a small watercolour from the 1930s that inspired the renovation of the dining room.

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The prince's watercolour will not be on the tour but a copy will be displayed at the launch.

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Among his greatest achievements are the savagely realistic watercolour drawings of mendacious lawyers and their hapless or vicious clients, set against bleak courtroom backdrops.

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Dudley museum and art gallery is exhibiting the book and three watercolour pictures by Ernest R Fox, who used to live in the town.

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Increasingly, though, his energies were devoted to mixed-media drawings in black chalk, watercolour, pen and ink, often depicting Parisian street life: drinkers, gossips, entertainers, railway passengers.

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The refurbishment will allow the Minster to display many of its treasures, including papal seals and a Turner watercolour, to the public for the first time.

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Auction consultant and BBC antiques expert Eric Knowles described the watercolour and pencil sketches as "remarkable" and added the tapestry was "extremely significant to the art world".

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Low in the sky there's the classic cotton wool Cumulus, the Stratus, a layer of "rather dull" cloud, and higher up Cirrus - "a translucent delicate streak as if a watercolour brush has been stroked across the blue".

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