Built in 1910-1911 as a series of 7 trailer cars numbers 121-127 for use with Ganz trams 51-54.
In 1926, they were converted to trams with the installation of Siemens D 612 motors and renumbered to 101-107.
The chassis of one of the cars was used in the construction of Štvorokeňákov 44. In 1998, the chassis was reused to create a replica of 104 as from the 1920s.