50th anniversary of the establishment of the Workers' Defense Committee
Part No.
Author/Authors
Number
Value
Circulation
Printing technique/paper
Format
Sales sheet
Issue
Type of security
Part No.
ARA
Author/Authors
Number of stamps
1
Value
Circulation
Printing technique/paper
Format
Sales sheet
Date of introduction into circulation
2026-09-23
Type of security
Part No.
DATE
Author/Authors
author of the date stamp design: Roch Stefaniak
Number of stamps
1
Value
Circulation
Printing technique/paper
Format
Sales sheet
Date of introduction into circulation
2026-09-23
Type of security
Part No.
KNOWS
Author/Authors
Number of stamps
1
Value
5.80
Circulation
99000
Printing technique/paper
Format
43x31.25 mm
Sales sheet
Date of introduction into circulation
2026-09-23
Type of security
Part No.
FDC
Author/Authors
envelope designer: Roch Stefaniak
Number of stamps
1
Value
Circulation
Printing technique/paper
Format
Sales sheet
Date of introduction into circulation
2026-09-23



