Class was KPEV G7.3 of which only a total 85 were built.
Of these Poland received 33 as war reparations from Germany.
All 31 surviving in 1939 were taken over by the Russians
when they entered to Eastern Poland on 17.09.1939.
None of then have ever seen after this.
I think they were allocated to Gul.Zh.D.not to NKPS lines.