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Progress in Electronics - Progreso en Electrónica - De Forest Audions -

Progress in Electronics - Progreso en Electrónica - De Forest Audions -

Caution
This fully reproduced in this stamp in other electronic or printed without the express permission of the owner.
If you are interested contact the owner Stamp: Herman Cudris Castañeda

Descripción / observaciones

Códigos: Michel:US 1116 - Stamp Number:US C86 - Yvert et Tellier:US PA79 - Stanley Gibbons:US A1508
  • Technical Information
  • Owner:
    Herman Cudris Castañeda
  • Category:
    Science
  • Format:
    Landscape
  • Color:
    Lila
  • Face value:
    11 Cent.
  • Year:
    1973
  • Stamp viewed:
    137 times
  • State:
    Used
  • Status:
    Exhibition
  • Other information:
     perforated stamp Air mail

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