20 pfennigs airmail Rhine-Main along with 5 pfennigs Germania on official airmail card with special cancel "Frankfurt (MAIN) 14.6.12", the airmail stamp Michel number II shows the plate flaw III: "white dot at the bottom of sheet of the P from Pf, field 18", postal mailed to Berlin, excellent condition, the card shows at the bottom a slight traces of adhesion, Michel 250.-