Page 45 - Russo-Persian Postal Relations

Ship mail Russian Ship Mail at the Caspian Sea Caucasus & Mercury
Caspian Sea Shipping Line oval
Postmarks
Ambulant Sea Mail Post Offices. 1912 - 1918 Oval postmarks
Introduction of the ambulant post offices on vessels belonging to the Caucasus & Mercury Shipping Line
sailing between Baku and ports at the Caspian Sea including Persian ports

One of the ships was named Islam and frequented the port of Enzeli
The ship is shown on this Persian Postcard from about 1910

Enzelli, Bateau Islam

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Russian sea mail letter March 1918 (Julian). The latest recorded

Russian Sea
Mail
Dated 10 3 1918
(Julian)=
22 3 1918
(Gregorian)

According to
Tschilinghirian
the ambulant
post offices
· lasted into 1915