E-lok ET21  was designed and produced  in year 1959-71  with qty over 700pcs. Development was based on  USSR (soviet union)  loco VL22.       Loco  was used in industry operators ( as type 3E)   for coal, sand transport  etc.  Latter also  PKP operator buyied  this loco  too  as ET21.  Three  modified versions  exists, as  continous  improvements.  .....    After year 2005 most of loco was withdrawn from servie, just several  pcs  used by private operators. 

Model  equipped by ligthing ,  and interface Plux22.