Lot
5220 
(Italy) 1872 (Mar. 18) Lowell, Mass. to Rome, Italy, cover bearing 2¢ red brown (146) and 3¢ green (147) pair and single, each canceled cancel duplexed with "Lowell, Mass., Mar 18" cds, bold red "New York, Paid All, Mar 20" exchange cds, carried by Cunard Line Abyssinia from New York Mar. 20th to Queenstown arriving Mar. 30, reverse with Genova (4.5) transit and Rome (4.6) arrival cds; reduced slightly at right; "Roma" doodling, Very Fine use at the 11¢ Closed Mail rate to Italy. Estimate $150 - 200.
The 4¢ transit fee for Italy remained the same for the life of the convention. Later cover often lack red credit markings for the transit fees, probably reflecting a change to implementation of the convention regulations.