A couple of months ago I was Brakin' and our second unit (where the Brakeman usually rides) was a B23-7 but I will have to look at my timeslip to determine its number. It even had the AAR type B trucks. It was a neat old motor. At track speed I peeked out back on the walkway as it was pointing the way of our lead unit to get the whole experience since it was the first time actually riding in one. It was a starry moonlit central Oregon night and when it would wind up it would stop, then continue revving up, resulting in a nice flame job. Oh wait this is the kind of crap I am supposed to be jabbering about when I am retired. Unfortunatley the whole tour of duty was at night so I didnt get to take a picture of it.