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issue information

20th UPU congress

Tonga

17 Nov 1989

stamps in set 12

stamps in set about computers: 1 / 12
ID# 929
  • Format SS
  • Note terminal, crt monitor, telefax
  • Face v.57
  • Perf.13½ x 13½
  • Category monitor terminal
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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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