3% Funding Dollar Loan, Stabilization Series, issued April 15, 1937 - $100.
The issuance of these bills was related to the exchange of interest coupons on the 1927 stabilization loan bonds (interest coupons payable between April 15, 1937 and April 15, 1938). Redemption of these bonds was carried out by the government of the People's Republic of Poland between 1972 and 1980 (the purchase was carried out by PeKaO bank paying 36.5% of the face value in commodity bills).
The $100 slip is most often encountered as a cancelled, unissued blank - and is available for purchase in that form here. Bids are welcome.