Mail issue celebrates the work of Wakefield clockmaker

Royal Mail has released images of 10 stamps being issued to celebrate the founding of the Royal Observatory in 1675.

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Featured on the main set of six stamps are the Airy Transit Circle Telescope; Flamsteed House; the Great Equatorial Telescope, the largest refracting telescope in the UK; the Annie Maunder Astrographic Telescope; the Prime Meridian; and the Shepherd Gate Clock.