Stamps of Poland, 4th Polish United Workers Party congress issue
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postage
1964, Jun 15 4th Polish United Workers Party congress issue unwmk p. 9-14.5
| X | 60g | multi | Brick wall under construction & red flag | |||
| X | 60g | multi | Red & White Ribbon around Hammer | |||
| X | 60g | multi | hands holding red flag | |||
| X | 60g | multi | Hammer & rye |
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