hi there,
the east german railways had only 11 of 49 surviving engines on their territory, E18 04, 19, 23, 24, 28, 31, 34, 40, 43, 44 and 48. The five operational machines them went to the USSR as reparation. They returned from there in 1952 and were sold immediately to the west German DB.
E18 06 survived the end of the war the west Germany. All DB E18's were painted green after the war. E18 06 was actually the second machine that was painted blue in 1953. Only the East German DR machines had red underframes, all DB machines were black.
Richards model has also the early style lamps that were flush with the body. Most machines received "frog eye" lamps in later times that were protuding some 20cm.
The pantograph is a SBS39/54. I haven't found any reliable information, when E18 06 has received this type.
I remember these machines in Stuttgart. They had their electromechanic switchgear visible behind one of the windows. A very impressive view when they left the station. That was in the late seventies, they were all blue at that time.
Michael