United States. (Netherlands - Transatlantic Mails). 1855. Folded letter addressed to Amsterdam cancelled by Baltimore date stamp in blue 'Sep 24' with hand-struck 'PAID/ 5' in red on face and manuscript '5' in pencil, endorsed 'Per "Africa", routed via Boston with 'Boston Am. PKT' dated '2nd Oct' and held for the British packet with circular 'Boston Br. PKT.' dated '10 Oct', London transit 'Oct 22' on reverse with manuscript '80' Dutch cent due rating.
Unusual item to have been sent by Prussian Convention Mail (AM. Packet) but delayed for the Cunard Line "Africa" sailing via Halifax to Liverpool with British Mail Treaty (Br. Packet) on reverse 8 days later.