27 November 1919. Fifth type: five-line overprint: BATUM BRITISH P. 15 P. OCCUPATION OBA. on an imperforate 1 kopek stamp (orange-yellow). The later overprints were produced in three colors: black, red, and violet (the violet color variant was additionally printed in 1920). The red and violet overprints were made with water-soluble ink.
British Post Office in Batum: a postal service organized by the United Kingdom military administration during the occupation of the Georgian port of Batumi, which in 1918β1920 issued its own postage stamps.
At the beginning of World War I, Batum was part of the Russian Empire and served as the administrative center of the Batum Oblast. In April 1918 the city was entered by troops of the Ottoman Empire, and on 15 December of the same year, after the defeat of the Central Powers, by British troops, who remained until July 1920.
From 27 November 1919 to 10 March 1920, various overprints of new denominations, the name of the oblast, and an indication of the British occupation were applied to the remaining stocks of Russian stamps from the 17th, 18th, and 21st issues.