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Royal Observatory Greenwich – postcard collection
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Estimated date
 c.1994
Publisher
 National Maritime Museum
Publisher's title
 The Airy Transit Circle, 1850. In 1851 this became the new co-ordinate for the Prime Meridian longitude 0º) of the Royal Observatory, Greenwich.
Nominal size
 6.5 x 4.5 inches
Publisher/printer ref.
 n/a
Website ref.
 PC0526
Links
 Other versions of the same image

National Maritime Museum, London (negative No. D7064). As well as not making sense, there is a typographical error in the caption.
 

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