Envelope, 1871, 7¢ vermilion on amber. Entire additionally franked on reverse with 1901 1¢ + 2¢ paying the registered printed matter rate from New York to Belgium, adhesives tied by indistinct cancel, violet registry handstamps & label on front, backstamped with arrival postmark, Extremely Fine and scarce, a late & unusual usage of this rare entire. Scott No. U88  Estimate $200 - 300. $0 (Image)