5 Pfg till 1 Guilder "10 year to be available the free city of Gdansk" on unmailed First Day Cover with stamp "Gdansk 1af 15. 11. 30", according to photo expertize Oechsner BPP is the piece in excellent condition (Michel. No. 226 missing tooth), these first day cancellations of this issue are very rare and become hardly ever offered!