20 Pf on 30 Pf postcard (advertising slogan 02) with additional postage of 20 Pf on 1 Pf Hindenburg with red overprint (vertical pair!) as sufficient postage (with handwritten note) on a postal item that was not actually sent, flawless condition, rare, unsigned and photo certificate Gerhard Krischke "The envelope is stained, but the overall condition is excellent.", Michel 1. 500.- + +