U.S. Mail, 6LB11, 1c Black on Buff, with #1 1847 5c Brown, Both Tied on Cover to Philadelphia

#7 in 6LB11 Black/buff with the 1847 Issue Census by Larry Lyons
The carrier stamp is tied by red “New-York Jul. 2” circular datestamp. The 5c, with margins all around, is struck with red New York Grid Duplex. The cover with small tears at bottom and wrinkles.
Only 15 recorded uses of the 6LB11 on Cover with the #1.