OK, maybe it's late and my brain is getting a bit dotty, but it seems to be wanting to convince me that the early, square metal hatches had a small tubular rail, like a towel rack, mounted on the roof of the cab, at the front of the opening. Looking somewhat like a grab rail. Is this correct? Was it a grab rail, or was it rail to take a sliding gun mount of some sort? Or am I just experiencing another brain fart?
David
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