1856 #7 10d Cartier, faulty copy with light target cancel on worn cover (back flap off) with RPO QC-155.05 "MON & ISLD. PD. GRAND TRUNK R.WAY/ No. 5" (A/UP/DEC 12?1855" to London, England, with red "PAID FE 29 1856" transit (A LEAP DAY). Transatlantic covers are rarely seen with early RPO cancels. Rough but rare (Image)