Stamps and Covers of the World - Day 1

ITALIA ANTIGUOS ESTADOS: ESTADOS PONTIFICIOS. 1852 (May 20). Entire letter sent underpaid to HALIFAX (Nova Scotia); bearing single 1852 5 baj. black on rose tied by ROME cds in black. Sent in error to Halifax (Yorkshire, UK) and struck there with blue datestamp (May 26). Correctly re-addressed and charge 1 shilling 10½d in manuscript due. Reverse with Liverpool cds (May 27) transit in blue. An extraordinary cover to a rare destination.