cover 10c Black (2), huge margin at L. showing part of adjacent stamp, roughly separated from the sheet well into the design giving the stamp the appearance of a bisect, tied by neat red grid cancel on folded cover to Philadelphia, Jun 2 U.S. Express Mail, Boston, Mass. c.d.s., '20' h.s. and ms. '10 Due', light file fold well clear of stamp and markings, almost fine, a very unusual cover, the rate markings confirm that this is not a bisect usagephoto est.