I don't have the cars at my house, but I thought Micro Trains painted the 89' flatcars with the TTX herald/logo instead of a Trailer Train logo. Next time I am at my father's place, I will have to look. I would personally get the Microscale Trailer Train set and put a "Trailer Train" decal over the TTX to back date it to the 70's/80's era. Thanks.
Jeff