Yes it is. Smoothside roomette based on the PRR Broadway Limited prototype. Tooled by RivaRossi for Atlas in the late 1960s and released under the RivaRossi name in Europe. Later imported by Con-Cor under the RivaRossi name. I purchased this particular Atlas-branded model over 50 years ago.
The model was upgraded to current standards in 2005 because I didn’t want to permanently retire it. It was featured in the May/June issue of N Scale Railroading.
I have 3 of these cars that I have painted as Erie plan 4129 cars, although they are not exact replicas of the Erie prototypes- the major visual difference being the windows on the bedroom end of the car, which in photos appear to be in 3 pairs (like a plan 4140), rather than 6 evenly spaced windows. I did not think of doing Kato trucks at the time, but putting that on my "things to do" list (item #2144). Frankly, I think the Rivarossi and Rowa cars of the late 60s are better than the Con-cor tooled models that succeeded them, and indeed, as good as anything available RTR until the Kato smoothside and Budd cars appeared 25 years later.
The prevailing wisdom 15 or 20 (maybe 30?, 40?) years ago was that the Rivarossi car was a model of an ACF built PRR class PS106, and there were pronouncements by various modelers that some of the earliest cars (there were 3 different ACF lot #s) were delivered with evenly spaced bedroom windows. But since in the intervening time, I've never found a photo of one with evenly spaced windows, I assumed this was more a case of self-appointed experts pontificating, than actual prototype info. But the aisle side of the car is pretty clearly based on the ACF window arrangement.
But given the subject matter here- are the evenly spaced bedroom windows accurate for PRR or any other prototype?