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Poste Srpske on the occasion of World Post Day in October 9th issue commemorative stamp with great philatelic interesting thing "Private perforation Banjaluka" connected to the Monastery in Trapisti "Marija Zvijezda" in Banjaluka. Private perforation appeared only on the stamp with the nominal value of 45 hellers, because it is mostly used to deliver packages to the famous cheese "Trappist". After the stock of perforated stamps were spent, they started to use not perforated sheets of stamps of 45 heller. Monastery got from the post office not perforated stamps in the lack of postal stamp, and because of easier handling, people in the Monastery perforated those not perforated stamps with their perforator in the line perforation 11 ½.
So, one special perforation was created, that was known in the philatelic world as "private perforation Banja Luka" and it was used in the short period during 1910.
Graphic realization of the stamps: Bozidar Dosenovic and Nebojsa Djumic
Publisher: POSTE SRPSKE a.d. Banjaluka
