I just got this in the mail today. The seller described it as a dark olive loco, but it's dark gray. I don't have any dark olive locos with stamped handrails. Here it is with a common dark olive pullman for color comparison:
It's a dark gray 153 with stamped nickel handrails and type 5 motor with brush tubes.
I have the same loco in light gray with brass handrails and a type 4 motor with riveted brushes. The light gray one might be a 152 misnumbered as it has no reverse and looks to have never had one.
Here's the two gray 153s side by side:
Here's a top down view to comp[are the colors again.
I know the 153 can be found in gray with wire handrails because there is one shown in the most recent Greenberg book.