5 Pfg till 1 Guilder "10 jähriges to be available the free city of Gdansk" on unmailed First Day Cover with postmark "Gdansk 1af 15. 11. 30", according to certificate with photograph Oechsner BPP is the piece in very good preservation (Mi.-no. 226 missing tooth), these Ersttagsabstempelungen this issue are very rare and become hardly once offered!