On a limited number of stamps with denominations of 1, 3, 5, 10 and 15 rubles, the printing house overprinted the word "SPECIMEN". These stamps were intended to be sent to Switzerland to the Universal Postal Union (UPU), to which in October 1920 an application was submitted for the admission of Armenia to the membership of this Union.
However, due to the change of government, the question of Armenia's accession to the Universal Postal Union was dropped, and stamps with the overprint "SPECIMEN" also entered the foreign philatelic markets.
