1919, "of the Checkpoint Mainz released", violet two-line cancel on insured letter the colonial postage stamp point from BERLIN C1 22. 3. 19 being a "official matter liable to payment of postage" with postage due note "60" to Wiesbaden with arrival postmark from 25. 3., Fold and transport traces, in fact scarce combination from the early years the Rhineland occupation!