CANAL ZONE, DECEMBER 1915, 5c JUSTO AROSEMENA, TYPE III MT HOPE LOCAL CANAL ZONE OVERPRINT (#48, 2ND PTG), TIED BY ANCON, 4-20-1920, MACHINE CANCEL ON COMMERCIAL COVER FRONT TO ENGLAND. STAMP IS WELL CENTERED WITH SLIGHT TONING ON FEW PERF TIPS. A VERY SCARCE NEWLY DISCOVERED 2ND PRINTING COVER OF WHICH ONLY 13 HAVE BEEN RECORDED!