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BNPS_PosterVintage_01.jpeg (01202) 558833<br />
Pic: HenryAldridge&Son/BNPS<br />
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A rare vintage railway poster advertising a British seaside holiday has sold for £1,000.<br />
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The British Railway poster for the Northern Ireland seaside resort of Portstewart was designed by the artist Montague Black in the 1950s.<br />
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The vibrant image harks back to the golden age of steam and is a work of art in its own right.