This particular run of these cars has a missing "N" in the roadname. It is my understanding that the font in the digital drawings put the letter too close to the vertical brace, which then caused the factory's equipment to not apply the letter. It wasn't caught in quality-control. To remedy this situation, I bought a set of C-D-S decals for the PRR X26 boxcar, part number S-310.
The decals are a somewhat close match to the ones applied in the factory. The font is correct, but the letter is also ever so slightly larger than the factory ones. This is noticeable under close scrutiny, but under normal circumstances, you probably won't notice. What was noticeable, however, was the missing letter! That's fixed now.