15 and 20 penny with overprint 36 Potsdam 1 in fivefold mixed franking with Control Council, Soviet Zone overprint, posthorn overprint bar and carpet as West Berlin forerunner registered cover from Berlin Charlottenburg 6 to pasadena USA with on route passing cancellation from New York and arrival postmark from pasadena, rare cover in use of stamps from the district 36 in West Berlin, faultless condition and very decorative!