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seismograph

  • Colnect-3925-611-Seismograph.jpg
  • Colnect-2588-068-Seismograph.jpg
  • Colnect-5593-168-Seismograph.jpg
Short desc: seismograph




This design is used by 3 stamps: (See all uses as list)
India 1/10/1977 2r vioblk issue=6th World Conference on Earthquake Engineering wmk=Asokan capital
Turkey 9/8/1980 20l issue=7th World Conference on Earthquake Engineering perf=13
Micronesia 10/4/1999 33c issue=New Millennium - Science and Technology of Ancient China perf=12.5






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