Postcard with bisect 4 cent - pen canc. (tied), purser S/S CANADIA and ms date 23/III 1903, to Germany.
Covers mailed while on board a German ship
A ship´s purser could keep a supply of stamps from the country where the ship departed, and under the UPU rules he would post them in the first port of call where they would
be accepted without penalty.
This practice is allowed today, a century later. The German steamers han their own cancels with the ship´s name that somtimes would be used to cancel the stamp, but other times the purser would use a pen and
ink to write the date on the stamp. Other times the stamp would just be marked with an "X" with the date written on the envelope or postcard.
All German/DWI steamship covers are highly sought, and I am aware of five postcards having a bisected
4-cent stamp and used on postcards mailed to Germany.