1873 RPO RY-6.01 “Registered B & L H R” bs (RF “E”) on cover from Port Maitland, UC (NO 15 1873), date corrected to NO 17, #37 3c Small Queen tied by “REGISTERED” hs,
Also B&L H R (West NO 18)
Stamp off to right of 3c Small Queen, presumably a 2c to pay registry fee.