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Type: stamp Issuer: Macao Date: 2002 Denom: ? Visibility: public Image owner: none postage 11/22/2002 1.50p multi issue=Standard Model of Particle Physics unwmk perf=14x14.5 Crops No visible images cropped from this one. Measurements Resolution is unknown. Source Source name: Colnect File URL: http://i.colnect.net/b/1044/801/Science---Technology---Standard-Model-of-Particle-Physics.jpg Uploaded September 8, 2014, 10:26 pm by Stan Shebs