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1957, Jan 18
Poland skiing 50th issue unwmk p.
9-14.5


1957, Feb 26
UN 1957 issue



1957, Mar 22 p.
9-14.5

1957, Apr 20
World Youth Fencing Championships 1957 issue


1957, Apr 27
famous Polish doctors issue (8 stamps)






1957, May 4
10th Peace Race issue

1957, Jun 8
26th Poznan Fair issue
1957, Aug 12
flowers (1957 Poland) (5 stamps)




1957, Sep 11
Fire Brigade Conference issue


1957, Sep 25
trade union congress 1957 issue
1957, Oct 9
Stamp Day 1957 issue
1957, Nov 7
Russian Revolution 40th issue

1957, Nov 15
Poznan Scientific Society 100th issue
1957, Dec 2
1957, Dec 11
Didactica Opera Omnia 300th issue
1957, Dec 16
Andrzej Strug death 20th issue
1957, Dec 30
Joseph Conrad 100th issue

airmail
1957, Dec 6
1957 air issue (no perf info) (6 stamps)
airmail semipostal
1957, Mar 28
Polish Philatelic Exhibition 1957 issue

airmail sempostal
1957, May 18
7th National Philatelic Exhibition in Warsaw issue
1 to 51 of 51