Paquebot Cover GB 1955 – Cunrad RMS Mauretania – Southampton
Under the UPU regulations, letters and cards posted at sea should be affixed with the postage stamps of the country under which the vessel is registered. the Postal rates of such country shall apply. If the vessel is at a port when the postcard or letter is handed over it is required to be affixed with stamps of the country in whose waters the vessel is docked. Though not stated in practice, letters with stamps of the country of last port of call are also accepted.
A Paquebot cover posted at Sea onboard Cunrad RMS Mauretania on 29 Jul 1955 with GB stamp postmarked and cancelled at Southampton seaport. The cover was to be delivered in the USA.
Stamp Digest 