The stamping on the box as I recall was at least eligible, maybe my eyesight is the problem, or my memory, or both! The Greenberg book I have lists the red painted over gray plastic, which is what this one is, but with type "D" trucks(3 spring). The newer truck on the left has a more defined side frame, but is also a 2 spring as is the one on the right. My wife gave up on requests for me to get the trains organized long ago. As long as stuff isn't piled up all over the bedrooms she puts up with me. Besides, when I rediscover something that I had forgotten about, its like Christmas or a birthday. A win win without spending any money.