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I have three of these they are marked Pat. Pend. all pieces are the body's are white blocks wheels are red.
What set are these from?
These are Train Base 4 x 7 with Wheels Holder
with Train Wheel with 2 x 2 Stud Center, Traction Teeth
and Turntable 4 x 4 Complete, Perfectly Round
They were found in two sets from 1966:
Required, but never shown