PRR B60b Number Series

Model Railroader Prototype information for the modeler
1

I just picked up one the Walthers B60b PRR baggage cars, without a messenger room, modern Keystone scheme. I’m looking to number it using the decals Walthers provided but trying to narrow down the number since the PRR had so many of these. I did find a couple pictures of them in the 9000 series. First, what were the series for these cars? Second, this one will be in interchange service, was there a subset of the series that saw more interchange service than others?

Thanks

Ricky

2

After some more digging, found the number series, sort of. It looks like there were cars in the 7000s and 9000s.

Ricky