Very Rare Imperf Proof of Scott 254. Commemorating Pilsudski, printed on a special paper which had an ornate carmine red pattern on the reverse under the gum. Very fine, MNH  example of this very rare item signed by Z. Korszen with Z. Korszen Color Certificate 

Scare, VF, imperforate vertical pair of Proofs of Scott 267 in brown without gum as issued. Depicts Kosciuszko, Washington, and Pulaski. J. Walocha Color Certificate of Authenticity 

Scarce VF, MNH, Imperforate block of 4 of Scott 390. This issue depicts the Polish infantry and commemorates the official Anniv of the end of WW II on 9 May 1945.  J. Walocha Color Certificate of Authenticity.

Scarce Imperforate VF, MNH example of Scott 391. The design depicts the leaders of Poland after WW II plus the Polish White Eagle. Certificate of Authenticity: 17-2018 by Jerzy Walocha. 

Scare, VF, Pair, Airmail Overprint Proof, Mint (without gum as issued) on blank proof paper. J Walocha Color Certificate.

Scare, VF, Pair, Airmail Overprint Proof, Mint (without gum as issued) on blank proof paper. J Walocha Color Certificate.

Very scarce, VF, MNH, Proof printed in red. J Walocha Color Certificate

Scarce, VF, MNH, Missing Yellow Color Error.  Signed Schmutz with J Walocha Color Certificate. 

Rare VF Hinged Imperf Proofs of Scott 786-88 Fire Fighter issue. J. Walocha Color Certificate. 

Very scarce, VF, MLH, imperforate Proofs of Scott 792-93 commemorating 40th Anniv of Russian revolution. J. Walocha Color Certificate. 

Rare Imperf Color Variety (Green color missing) VF, Mint without gum as issued.
J Walocha Color Certificate.

Rare Imperf Color Variety (Green color missing)  VF, Mint (without gum as issued)
J Walocha Color Certificate.

Very Rare, Imperforate Proofs of 1971 Forestry Issue with colors missing.  #1920 missing black, #1921 missing black and brown, #1922 missing black. All VF Mint, without gum as issued. Not listed in 2019 Fischer Vol I. Jerzy Walocha Color Certificates. 

Scarce Imperforate Scott B48 issued to commemorate the small force of Polish Postal employees in Port Gdansk who held off the Germans for 15 hours on 1 Sep 1939, the  first day of WW II. J Walocha Color Certificate of Authenticity 

Rare VF Imperforate 1950 Postage Dues. MNH with the exception of a small gum disturbance on D120. These two values are the only values of this issue listed in Fischer as existing imperforate.  J. Walocha Color Certificate

Very rare pair of VF, Unused imperforate 5 and 10 hal Eagles (Orzel) issued by NKN (Supreme National Committee) in Krakow for use by the Polish Legions fighting in Russia. All issued stamps were perforated. Only a few imperforate are known to exist. J. Berbeka Color Certificate.

Rare, Imperforate block of four of 10 hal Eagle (Orzel) VF, MNH. Issued by NKN (Supreme National Committee) in Krakow for use by the Polish Legions fighting in Russia.  All issued stamps were perforated. Only a few imperforate are known to exist. J. Berbeka Color Certificate.   

Very rare complete set of VF 1st Polish Korp used on pieces.  Polish lithographic overprints on Russian stamps issued for the use of 1st Polish Korp in Russia under the command of  Gen DowBora-Musnicki. Printing of 10/7 Kop blue 700 pieces and 70 Kop Imerf 1000 pieces. J. Berbeka Color Certificate 

Scarce Perforated set of 1918 1st Polish Korp Overprints on Russian stamps.
VF, Unused. J Berbeka Color Certificate: 

Rare MNH Perforated set of 1918 1st Polish Korp Overprints on Russian stamps.
VF. J Berbeka Color Certificate.