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issue information

50th anniversary Engima decoding machine

Poland

16 Aug 1983


stamps in set 1

stamps in set about computers: 1 / 1
ID# 357
  • Format SH
  • Note Turing's Enigma machine, breaking code
  • Face v.5
  • Perf.11 x 11
  • Print.Lithography
  • Category personalities software
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Formats abbreviations

SH sheet

SS souvenir sheet

MS mini sheet

ST se-tenant

TB tete beche

BK booklet

FDC first day cover

CL coil



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