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issue information

The 20th Century

Portugal

18 Feb 2000


stamps in set 12

stamps in set about computers: 1 / 12
ID# 369
  • Format SS
  • Note Alan Turing - Janos Newmann - binary code
  • Face v.52
  • Perf.12 x 11
  • Print.Lithography
  • Category binary code personalities
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SH sheet

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MS mini sheet

ST se-tenant

TB tete beche

BK booklet

FDC first day cover

CL coil



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