I came across some photos of the 1955 wreck of the NH/PRR Federal that I hadn't seen before. The incident report does not identify the cars at the back of the consist that stayed upright or stayed on the rails. A total of 17 cars were in the consist. New Haven buffet-lounge Keystone State was the 14th car and is identifiable based on photos of the scene. The 15th and 17th cars were PRR smoothside sleepers, and the 16th car was a New Haven "Beach" series sleeper.
This is the first photo I've seen of the 15th car that gives a clue to it's identity. I'm not looking for the specific car necessarily, just the series, although the name is partially visible.

Keystone State is to the right. The Pennsy car doesn't appear to be the "Creek" series, which would have been convenient because Kato tooled that model for the Broadway. Any help would be appreciated, thanks.