Stamps of Poland, Apr 1951
1 to 18 of 18
postage
1951, Apr unwmk p. 9-14.5
| X | 40g | dkbl | Nowa Huta steel mill | |||
| X | 45g | blk | Nowa Huta steel mill | |||
| X | 60g | brn | Nowa Huta steel mill | — | — | |
| X | 90g | brncar | Nowa Huta steel mill |
1951, Apr 1 Childrens Day 1951 issue
| X | 30g | olbrn | pioneer saluting | |||
| X | 45g | blgrn | Boy & girl pioneers |
1951, Apr 15
| X | 45g | bl | workers 1950 | |||
| X | 75g | grayvio | workers 1950 | |||
| - | 1.15z | dkgrn | workers 1950 | |||
| X | 1.20z | dkred | workers 1950 |
1951, Apr 20 ovpted (no wmk info) (no perf info)
| - | 45g | brnred | on 15z-brnred-Picasso dove-unissued (0), Picasso dove |
1951, Apr 25 1st Polish Science Congress issue unwmk p. 9-14.5 (6 stamps)
1951, Apr 25 Labor Day 1951 issue
| - | 45g | scar | Worker & flag |
1 to 18 of 18