"Sopot (free city Gdansk) airmail 27. 8. 33", clear on commercially used 10 Pfg. postal stationery picture postcard with 10 Pfg. national coat of arms and much text to Frankfurt with on face postmark "Frankfurt T. A. Eilbriefbestellung 28. 8. 33" and L1-Datumsstempel the internal Frankfurt pneumatic post, excellent preservation, signed Infla Berlin, in this combination rare!