Engines have a PS-68 braking system. It is similar to 24-RL, but unlike 26 systems it is not self lapping. that is, when a brake pipe reduction(application) is made, the engineer must monitor the guages and move the handle to "LAP" to stop the reduction, where as with more modern systems, when the automatic brake handle is moved to a point within the "Service" area of the handle, the application will stop and remain at a set level until released.
Mechanically, they are tired, and while they do have all the classic lines, appearances can be decieveing. at least when you compare the outside to the enginerooms. I would hate to see them go, but as long as they aren't getting scrapped and eventually find a new home, there's hope for them yet. It just may not involve the NYS&W....
I know I'm getting old... My insurance company sent me only half a calendar this year!