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Type: stamp Issuer: Great Britain Date: 1999 Denom: ? Visibility: public Image owner: none postage 1/12/1999 20p multi issue=Millennium Series 1 - The Inventors' Tale d=Greenwich Meridian & Clock John Harrisons chronometer unwmk perf=14.25x14.5 Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/123/274/Greenwich-Meridian-and-Clock-John-Harrison-s-chronometer.jpg Uploaded September 2, 2014, 9:13 pm by Stan Shebs