Royal Observatory Greenwich – postcard collection
 1
of
0
...

Estimated date
196771
Publisher
H.M.S.O. / National Maritime Museum
Publisher's title
The Time Ball Signal, Old Royal Observatory, National Maritime Museum. ...
Nominal size
6.0 x 4.0 inches
Publisher/printer ref.
Card No. 238.
Website ref.
PC0612
Links
Other versions of the same image
Cards based on photographs taken on the same day

© Crown Copyright. Printed by The Artisan Press Ltd.
 

...