Time for some late Penn Central and early Conrail love! I'm no Rich Yourstone or Tom Mann, so please bear with me:
Weathered this MicroTrains PC hopper (added real coal and added ACI label as well):

I love Atlas Trainman because they're so cheap yet well painted. Here I've weathered a 50' Trainman flat (and added another ACI label along with some debris to the deck):

Up next is an Atlas FGE boxcar as a Penn Central X73, once again weathered (and ACI label added):

By 1980 (the era in which I model Conrail) many of these cars had been restenciled for Conrail rather hastily, often by painting out the PC logos with fresh PC green paint and adding new dimensional data. That's what I attempted here:

Other side:

Last is a MicroTrains PRR X29 MOW boxcar... These were still in service in PRR MOW yellow even in the Conrail era; by 1980 they were rolling rust buckets. My version is actually less rusty than what the proto photos show:


I used acrylic washes and chalks for the weathering and Microscale decals.