1965. 14N prototype (no. 127). The car had the body of type 13N, but the contactors were used instead of the PCC technology. The constructors wanted to couple 14N with a passive trailer (named 14ND), but the car had not enough power. After the tests, 14N cars (two of them were built) were used as revenue cars by WPK Katowice - here as Route 213.