Filter 57 is a Slovenian brand of cigarettes, owned and manufactured by "Tobačna Ljubljana, a division of Imperial Tobacco.

The difference from other brands at the time, such as Drina, Jadran, Drava and so on, was that these cigarettes were packed upside down, which made them a really popular smoke amongst the Slovenian working class.

According to the Museum of Contemporary History of Slovenia, a technical error was the true reason why "57" cigarettes were packed upside down.

After the breakup of Yugoslavia, the cigarette is still largely popular in modern-day Slovenia, but the manufacturing operations of the "Tobačna Ljubljana were ended.

Folk imagination provided an interesting interpretation of the visual image of the Filter 57 box, which says that in the contours of the dragon's head we can recognize a cup of coffee and in its hull an outline of Slovenia.