In the late 1970's Conrail took delivery of a fleet of General Electric B23-7 locomotives. These dominated the Albany Division in yard and local service during the later 1980's and into the era set on the Onondaga Cutoff - the 1990's. By this time, the B23's were becoming a ratty bunch, and so Conrail started to rebuild and then repaint them at its massive Juniata Shops in Altoona, PA.
On the Onondaga Cutoff, I work to model locomotives at different stages of weathering, reflecting photos from the era. Here, Onondaga Yard on a warm fall evening in 1995 finds 1987 and 1989 working side by side, classifying cars for outbound blocks:
Below is a closer view of 1989, with the Conrail specific details like the cab signal box and Leslie RS-3L horn, deck-mounted ditch lights, and a lack of sunshades:
And finally an image to communicate some of the tiny work that goes into detailing an HO scale locomotive, showing the metal casting ditch lights that I drilled out using #70 drill bits to accept the LEDs and their wires.
Conrail in the 1990's was a proud company that had come through a tough 15 years of demoralizing rationalization. But, part of that tough period was rebuilding the physical plant, and refurbishing a fleet of equipment - which developed a generation of railroad managers that defined the next 20 years of railroading in the Northeast.
And so it follows that some of the most ratty of the B23-7s were working next to freshly rebuilt B23-7's, and I have modeled that with Conrail 1987 wearing its 1979 paint, and with Conrail 1989 wearing its new ditch lights and 1995 paint. I enjoy weathering rolling stock and infrastructure, but when your era allows contrast, sometimes it provides as much interest as the weathering does.
Best wishes as the summer arrives!